diff --git a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
index f1e67479f5..53ca7ed18e 100644
--- a/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/FallbackTaskbarUIController.java
@@ -40,8 +40,7 @@ public class FallbackTaskbarUIController extends TaskbarUIController {
                     animateToRecentsState(toState);
 
                     // Handle tapping on live tile.
-                    RecentsView recentsView = mRecentsActivity.getOverviewPanel();
-                    recentsView.setTaskLaunchListener(toState == RecentsState.DEFAULT
+                    getRecentsView().setTaskLaunchListener(toState == RecentsState.DEFAULT
                             ? (() -> animateToRecentsState(RecentsState.BACKGROUND_APP)) : null);
                 }
             };
@@ -85,4 +84,9 @@ public class FallbackTaskbarUIController extends TaskbarUIController {
             anim.start();
         }
     }
+
+    @Override
+    public RecentsView getRecentsView() {
+        return mRecentsActivity.getOverviewPanel();
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 317f6a4884..2bcf179a4c 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -48,6 +48,7 @@ import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.OnboardingPrefs;
 import com.android.quickstep.AnimatedFloat;
 import com.android.quickstep.RecentsAnimationCallbacks;
+import com.android.quickstep.views.RecentsView;
 
 import java.io.PrintWriter;
 import java.util.Arrays;
@@ -393,4 +394,9 @@ public class LauncherTaskbarUIController extends TaskbarUIController {
 
         mTaskbarLauncherStateController.dumpLogs(prefix + "\t", pw);
     }
+
+    @Override
+    public RecentsView getRecentsView() {
+        return mLauncher.getOverviewPanel();
+    }
 }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index fad9ff490c..9fb13db8f6 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -90,6 +90,7 @@ import com.android.launcher3.util.SettingsCache;
 import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.util.ViewCache;
 import com.android.launcher3.views.ActivityContext;
+import com.android.quickstep.views.RecentsView;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.rotation.RotationButtonController;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
@@ -132,6 +133,7 @@ public class TaskbarActivityContext extends BaseTaskbarContext {
     private final boolean mIsUserSetupComplete;
     private final boolean mIsNavBarForceVisible;
     private final boolean mIsNavBarKidsMode;
+
     private boolean mIsDestroyed = false;
     // The flag to know if the window is excluded from magnification region computation.
     private boolean mIsExcludeFromMagnificationRegion = false;
@@ -755,42 +757,63 @@ public class TaskbarActivityContext extends BaseTaskbarContext {
             if (info.isDisabled()) {
                 ItemClickHandler.handleDisabledItemClicked(info, this);
             } else {
-                Intent intent = new Intent(info.getIntent())
-                        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                try {
-                    if (mIsSafeModeEnabled && !PackageManagerHelper.isSystemApp(this, intent)) {
-                        Toast.makeText(this, R.string.safemode_shortcut_error,
-                                Toast.LENGTH_SHORT).show();
-                    } else  if (info.isPromise()) {
-                        TestLogging.recordEvent(
-                                TestProtocol.SEQUENCE_MAIN, "start: taskbarPromiseIcon");
-                        intent = new PackageManagerHelper(this)
-                                .getMarketIntent(info.getTargetPackage())
-                                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-                        startActivity(intent);
+                TaskbarUIController taskbarUIController = mControllers.uiController;
+                RecentsView recents = taskbarUIController.getRecentsView();
+                if (recents != null
+                        && taskbarUIController.getRecentsView().isSplitSelectionActive()) {
+                    // If we are selecting a second app for split, launch the split tasks
+                    taskbarUIController.triggerSecondAppForSplit(info, info.intent, view);
+                } else {
+                    // Else launch the selected task
+                    Intent intent = new Intent(info.getIntent())
+                            .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                    try {
+                        if (mIsSafeModeEnabled && !PackageManagerHelper.isSystemApp(this, intent)) {
+                            Toast.makeText(this, R.string.safemode_shortcut_error,
+                                    Toast.LENGTH_SHORT).show();
+                        } else if (info.isPromise()) {
+                            TestLogging.recordEvent(
+                                    TestProtocol.SEQUENCE_MAIN, "start: taskbarPromiseIcon");
+                            intent = new PackageManagerHelper(this)
+                                    .getMarketIntent(info.getTargetPackage())
+                                    .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                            startActivity(intent);
 
-                    } else if (info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
-                        TestLogging.recordEvent(
-                                TestProtocol.SEQUENCE_MAIN, "start: taskbarDeepShortcut");
-                        String id = info.getDeepShortcutId();
-                        String packageName = intent.getPackage();
-                        getSystemService(LauncherApps.class)
-                                .startShortcut(packageName, id, null, null, info.user);
-                    } else {
-                        startItemInfoActivity(info);
+                        } else if (info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
+                            TestLogging.recordEvent(
+                                    TestProtocol.SEQUENCE_MAIN, "start: taskbarDeepShortcut");
+                            String id = info.getDeepShortcutId();
+                            String packageName = intent.getPackage();
+                            getSystemService(LauncherApps.class)
+                                    .startShortcut(packageName, id, null, null, info.user);
+                        } else {
+                            startItemInfoActivity(info);
+                        }
+
+                        mControllers.uiController.onTaskbarIconLaunched(info);
+                    } catch (NullPointerException
+                            | ActivityNotFoundException
+                            | SecurityException e) {
+                        Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT)
+                                .show();
+                        Log.e(TAG, "Unable to launch. tag=" + info + " intent=" + intent, e);
                     }
-
-                    mControllers.uiController.onTaskbarIconLaunched(info);
-                    mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
-                } catch (NullPointerException | ActivityNotFoundException | SecurityException e) {
-                    Toast.makeText(this, R.string.activity_not_found, Toast.LENGTH_SHORT)
-                            .show();
-                    Log.e(TAG, "Unable to launch. tag=" + info + " intent=" + intent, e);
                 }
+                mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
             }
         } else if (tag instanceof AppInfo) {
-            startItemInfoActivity((AppInfo) tag);
-            mControllers.uiController.onTaskbarIconLaunched((AppInfo) tag);
+            AppInfo info = (AppInfo) tag;
+            TaskbarUIController taskbarUIController = mControllers.uiController;
+            RecentsView recents = taskbarUIController.getRecentsView();
+            if (recents != null
+                    && taskbarUIController.getRecentsView().isSplitSelectionActive()) {
+                // If we are selecting a second app for split, launch the split tasks
+                taskbarUIController.triggerSecondAppForSplit(info, info.intent, view);
+            } else {
+                // Else launch the selected task
+                startItemInfoActivity((AppInfo) tag);
+                mControllers.uiController.onTaskbarIconLaunched((AppInfo) tag);
+            }
             mControllers.taskbarStashController.updateAndAnimateTransientTaskbar(true);
         } else {
             Log.e(TAG, "Unknown type clicked: " + tag);
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
index 11521260e9..0af25966ea 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarUIController.java
@@ -15,13 +15,18 @@
  */
 package com.android.launcher3.taskbar;
 
+import android.content.Intent;
+import android.graphics.drawable.BitmapDrawable;
 import android.view.MotionEvent;
 import android.view.View;
 
 import androidx.annotation.CallSuper;
+import androidx.annotation.Nullable;
 
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.ItemInfoWithIcon;
+import com.android.quickstep.views.RecentsView;
+import com.android.quickstep.views.TaskView;
 
 import java.io.PrintWriter;
 import java.util.stream.Stream;
@@ -128,4 +133,38 @@ public class TaskbarUIController {
                 prefix,
                 getClass().getSimpleName()));
     }
+
+    /**
+     * Returns RecentsView. Overwritten in LauncherTaskbarUIController and
+     * FallbackTaskbarUIController with Launcher-specific implementations. Returns null for other
+     * UI controllers (like DesktopTaskbarUIController) that don't have a RecentsView.
+     */
+    public @Nullable RecentsView getRecentsView() {
+        return null;
+    }
+
+    /**
+     * Uses the clicked Taskbar icon to launch a second app for splitscreen.
+     */
+    public void triggerSecondAppForSplit(ItemInfoWithIcon info, Intent intent, View startingView) {
+        RecentsView recents = getRecentsView();
+        TaskView foundTaskView = recents.getTaskViewByComponentName(info.getTargetComponent());
+        if (foundTaskView != null) {
+            recents.confirmSplitSelect(
+                    foundTaskView,
+                    foundTaskView.getTask(),
+                    foundTaskView.getIconView().getDrawable(),
+                    foundTaskView.getThumbnail(),
+                    foundTaskView.getThumbnail().getThumbnail(),
+                    /* intent */ null);
+        } else {
+            recents.confirmSplitSelect(
+                    /* containerTaskView */ null,
+                    /* task */ null,
+                    new BitmapDrawable(info.bitmap.icon),
+                    startingView,
+                    /* thumbnail */ null,
+                    intent);
+        }
+    }
 }
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 35414a644a..fed982c6fe 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -74,9 +74,12 @@ import android.animation.ValueAnimator;
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.app.WindowConfiguration;
+import android.content.ComponentName;
 import android.content.Context;
+import android.content.Intent;
 import android.content.LocusId;
 import android.content.res.Configuration;
+import android.graphics.Bitmap;
 import android.graphics.BlendMode;
 import android.graphics.Canvas;
 import android.graphics.Color;
@@ -661,8 +664,6 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     private TaskView mSecondSplitHiddenView;
     @Nullable
     private SplitBounds mSplitBoundsConfig;
-    private final Toast mSplitToast = Toast.makeText(getContext(),
-            R.string.toast_split_select_app, Toast.LENGTH_SHORT);
     private final Toast mSplitUnsupportedToast = Toast.makeText(getContext(),
             R.string.toast_split_app_unsupported, Toast.LENGTH_SHORT);
 
@@ -1212,6 +1213,21 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         return null;
     }
 
+    /**
+     * Returns a {@link TaskView} that has ComponentName matching {@code componentName} or null if
+     * no match.
+     */
+    @Nullable
+    public TaskView getTaskViewByComponentName(ComponentName componentName) {
+        for (int i = 0; i < getTaskViewCount(); i++) {
+            TaskView taskView = requireTaskViewAt(i);
+            if (taskView.getTask().key.sourceComponent.equals(componentName)) {
+                return taskView;
+            }
+        }
+        return null;
+    }
+
     public void setOverviewStateEnabled(boolean enabled) {
         mOverviewStateEnabled = enabled;
         updateTaskStackListenerState();
@@ -4230,24 +4246,39 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
      * Confirms the selection of the next split task. The extra data is passed through because the
      * user may be selecting a subtask in a group.
      *
+     * @param containerTaskView If our second selected app is currently running in Recents, this is
+     *                          the "container" TaskView from Recents. If we are starting a fresh
+     *                          instance of the app from an Intent, this will be null.
+     * @param task The Task corresponding to our second selected app. If we are starting a fresh
+     *             instance of the app from an Intent, this will be null.
+     * @param drawable The Drawable corresponding to our second selected app's icon.
+     * @param secondView The View representing the current space on the screen where the second app
+     *                   is (either the ThumbnailView or the tapped icon).
+     * @param intent If we are launching a fresh instance of the app, this is the Intent for it. If
+     *               the second app is already running in Recents, this will be null.
      * @return true if waiting for confirmation of second app or if split animations are running,
      *          false otherwise
      */
-    public boolean confirmSplitSelect(TaskView containerTaskView, Task task, IconView iconView,
-            TaskThumbnailView thumbnailView) {
+    public boolean confirmSplitSelect(TaskView containerTaskView, Task task, Drawable drawable,
+            View secondView, @Nullable Bitmap thumbnail, Intent intent) {
         if (canLaunchFullscreenTask()) {
             return false;
         }
         if (mSplitSelectStateController.isBothSplitAppsConfirmed()) {
             return true;
         }
-        mSplitToast.cancel();
-        if (!task.isDockable) {
-            // Task not split screen supported
-            mSplitUnsupportedToast.show();
-            return true;
+        // Second task is selected either as an already-running Task or an Intent
+        if (task != null) {
+            if (!task.isDockable) {
+                // Task does not support split screen
+                mSplitUnsupportedToast.show();
+                return true;
+            }
+            mSplitSelectStateController.setSecondTask(task);
+        } else {
+            mSplitSelectStateController.setSecondTask(intent);
         }
-        mSplitSelectStateController.setSecondTask(task);
+
         RectF secondTaskStartingBounds = new RectF();
         Rect secondTaskEndingBounds = new Rect();
         // TODO(194414938) starting bounds seem slightly off, investigate
@@ -4274,9 +4305,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 false /* fadeWithThumbnail */, true /* isStagedTask */);
 
         safeRemoveDragLayerView(mSecondFloatingTaskView);
-        mSecondFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity,
-                thumbnailView, thumbnailView.getThumbnail(),
-                iconView.getDrawable(), secondTaskStartingBounds);
+
+        mSecondFloatingTaskView = FloatingTaskView.getFloatingTaskView(mActivity, secondView,
+                thumbnail, drawable, secondTaskStartingBounds);
         mSecondFloatingTaskView.setAlpha(1);
         mSecondFloatingTaskView.addConfirmAnimation(pendingAnimation, secondTaskStartingBounds,
                 secondTaskEndingBounds, true /* fadeWithThumbnail */, false /* isStagedTask */);
@@ -4292,7 +4323,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         });
 
         mSecondSplitHiddenView = containerTaskView;
-        mSecondSplitHiddenView.setThumbnailVisibility(INVISIBLE);
+        if (mSecondSplitHiddenView != null) {
+            mSecondSplitHiddenView.setThumbnailVisibility(INVISIBLE);
+        }
 
         InteractionJankMonitorWrapper.begin(this,
                 InteractionJankMonitorWrapper.CUJ_SPLIT_SCREEN_ENTER, "Second tile selected");
diff --git a/quickstep/src/com/android/quickstep/views/TaskView.java b/quickstep/src/com/android/quickstep/views/TaskView.java
index 527a0d1b36..583771e15e 100644
--- a/quickstep/src/com/android/quickstep/views/TaskView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskView.java
@@ -621,7 +621,8 @@ public class TaskView extends FrameLayout implements Reusable {
         TaskIdAttributeContainer container = mTaskIdAttributeContainer[index];
         if (container != null) {
             return getRecentsView().confirmSplitSelect(this, container.getTask(),
-                    container.getIconView(), container.getThumbnailView());
+                    container.getIconView().getDrawable(), container.getThumbnailView(),
+                    container.getThumbnailView().getThumbnail(), /* intent */ null);
         }
         return false;
     }