diff --git a/quickstep/ext_tests/src/com/android/quickstep/DebugQuickstepTestInformationHandler.java b/quickstep/ext_tests/src/com/android/quickstep/DebugQuickstepTestInformationHandler.java
index 2ffb28e8fb..7fa62c1ca5 100644
--- a/quickstep/ext_tests/src/com/android/quickstep/DebugQuickstepTestInformationHandler.java
+++ b/quickstep/ext_tests/src/com/android/quickstep/DebugQuickstepTestInformationHandler.java
@@ -25,12 +25,14 @@ import androidx.annotation.Nullable;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.R;
-import com.android.launcher3.taskbar.LauncherTaskbarUIController;
 import com.android.launcher3.testing.DebugTestInformationHandler;
 import com.android.launcher3.testing.shared.TestProtocol;
-import com.android.launcher3.uioverrides.QuickstepLauncher;
+import com.android.quickstep.TouchInteractionService.TISBinder;
+import com.android.quickstep.util.TISBindHelper;
 
+import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.ExecutionException;
+import java.util.function.Consumer;
 
 /**
  * Class to handle requests from tests, including debug ones, to Quickstep Launcher builds.
@@ -49,29 +51,26 @@ public abstract class DebugQuickstepTestInformationHandler extends QuickstepTest
         Bundle response = new Bundle();
         switch (method) {
             case TestProtocol.REQUEST_ENABLE_MANUAL_TASKBAR_STASHING:
-                runOnUIThread(l -> {
-                    enableManualTaskbarStashing(l, true);
+                runOnTISBinder(tisBinder -> {
+                    enableManualTaskbarStashing(tisBinder, true);
                 });
                 return response;
 
             case TestProtocol.REQUEST_DISABLE_MANUAL_TASKBAR_STASHING:
-                runOnUIThread(l -> {
-                    enableManualTaskbarStashing(l, false);
+                runOnTISBinder(tisBinder -> {
+                    enableManualTaskbarStashing(tisBinder, false);
                 });
                 return response;
 
             case TestProtocol.REQUEST_UNSTASH_TASKBAR_IF_STASHED:
-                runOnUIThread(l -> {
-                    enableManualTaskbarStashing(l, true);
-
-                    QuickstepLauncher quickstepLauncher = (QuickstepLauncher) l;
-                    LauncherTaskbarUIController taskbarUIController =
-                            quickstepLauncher.getTaskbarUIController();
+                runOnTISBinder(tisBinder -> {
+                    enableManualTaskbarStashing(tisBinder, true);
 
                     // Allow null-pointer to catch illegal states.
-                    taskbarUIController.unstashTaskbarIfStashed();
+                    tisBinder.getTaskbarManager().getCurrentActivityContext()
+                            .unstashTaskbarIfStashed();
 
-                    enableManualTaskbarStashing(l, false);
+                    enableManualTaskbarStashing(tisBinder, false);
                 });
                 return response;
 
@@ -89,24 +88,26 @@ public abstract class DebugQuickstepTestInformationHandler extends QuickstepTest
         }
     }
 
-    private void enableManualTaskbarStashing(Launcher launcher, boolean enable) {
-        QuickstepLauncher quickstepLauncher = (QuickstepLauncher) launcher;
-        LauncherTaskbarUIController taskbarUIController =
-                quickstepLauncher.getTaskbarUIController();
-
+    private void enableManualTaskbarStashing(TISBinder tisBinder, boolean enable) {
         // Allow null-pointer to catch illegal states.
-        taskbarUIController.enableManualStashingForTests(enable);
+        tisBinder.getTaskbarManager().getCurrentActivityContext().enableManualStashingForTests(
+                enable);
     }
 
     /**
-     * Runs the given command on the UI thread.
+     * Runs the given command on the UI thread, after ensuring we are connected to
+     * TouchInteractionService.
      */
-    private static void runOnUIThread(UIThreadCommand command) {
+    private void runOnTISBinder(Consumer<TISBinder> connectionCallback) {
         try {
-            MAIN_EXECUTOR.submit(() -> {
-                command.execute(Launcher.ACTIVITY_TRACKER.getCreatedActivity());
-                return null;
-            }).get();
+            CountDownLatch countDownLatch = new CountDownLatch(1);
+            TISBindHelper helper = MAIN_EXECUTOR.submit(() ->
+                    new TISBindHelper(mContext, tisBinder -> {
+                        connectionCallback.accept(tisBinder);
+                        countDownLatch.countDown();
+                    })).get();
+            countDownLatch.await();
+            MAIN_EXECUTOR.submit(helper::onDestroy);
         } catch (ExecutionException | InterruptedException e) {
             throw new RuntimeException(e);
         }
diff --git a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
index 6c740bac50..6e0b71dca0 100644
--- a/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/LauncherTaskbarUIController.java
@@ -30,7 +30,6 @@ import android.view.WindowManagerGlobal;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.annotation.VisibleForTesting;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.LauncherState;
@@ -123,24 +122,6 @@ public class LauncherTaskbarUIController extends TaskbarUIController {
                 shouldDelayLauncherStateAnim);
     }
 
-    /**
-     * Enables manual taskbar stashing. This method should only be used for tests that need to
-     * stash/unstash the taskbar.
-     */
-    @VisibleForTesting
-    public void enableManualStashingForTests(boolean enableManualStashing) {
-        mControllers.taskbarStashController.enableManualStashingForTests(enableManualStashing);
-    }
-
-    /**
-     * Unstashes the Taskbar if it is stashed. This method should only be used to unstash the
-     * taskbar at the end of a test.
-     */
-    @VisibleForTesting
-    public void unstashTaskbarIfStashed() {
-        mControllers.taskbarStashController.onLongPressToUnstashTaskbar();
-    }
-
     /**
      * Adds the Launcher resume animator to the given animator set.
      *
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index e1bcbe23bf..3b1e6774b4 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -773,6 +773,24 @@ public class TaskbarActivityContext extends BaseTaskbarContext {
         mControllers.taskbarStashController.startUnstashHint(animateForward);
     }
 
+    /**
+     * Enables manual taskbar stashing. This method should only be used for tests that need to
+     * stash/unstash the taskbar.
+     */
+    @VisibleForTesting
+    public void enableManualStashingForTests(boolean enableManualStashing) {
+        mControllers.taskbarStashController.enableManualStashingForTests(enableManualStashing);
+    }
+
+    /**
+     * Unstashes the Taskbar if it is stashed. This method should only be used to unstash the
+     * taskbar at the end of a test.
+     */
+    @VisibleForTesting
+    public void unstashTaskbarIfStashed() {
+        mControllers.taskbarStashController.onLongPressToUnstashTaskbar();
+    }
+
     protected boolean isUserSetupComplete() {
         return mIsUserSetupComplete;
     }