Render the laser pointer and hands of the Meta Quest controller over a curved canvas in OVR/Overlay

I'm developing a virtual reality interface (UI) for Meta Quest using OVRCameraRigInteraction and OVR Canvas Mesh Renderer in OVR/Overlay mode to render my curved UI canvas with high-quality visuals. However, because OVR/Overlay mode renders on top of everything else, the laser pointer and controller hands appear behind the UI, making interactions difficult.

I want the laser pointer, hands, and controller images to render on top of the UI overlay, maintaining the high rendering quality of OVROverlay.

How do I do this? I've searched several forums and tried to implement solutions, but none have worked for me.