ZED Unity and Oculus

According to the website ZED mini should work with oculus, and it does. But I have the problem that I need the OVRCameraRig of oculus, to get the handtracking and everything. I just want to instead of showing the normal view of oculus, use the ZED mini like here Build your first AR/MR App with Unity | Stereolabs. But I don’t know how to add that to the OVRCameraRig of oculus to use UI, the hand tracking and other oculus functionalities.

Also when I put both a OVRCameraRig with cameras disabled and a StereoRig, the second time I run the project I always get “XR Management has already initialized an active loader in this scene. Please make sure to stop all subsystems and deinitialize the active loader before initializing a new one.” no matter what’s in the scene.