Experiencing the same issue - I tried to use similar code, the room capture session seems to run after the new run(config), but it does not seem to affect the AR session behaviour. What I would like to have, is to get both sets of callbacks - the roomCapture callbacks, such as: captureSession(_ session: RoomCaptureSession, didUpdate: CapturedRoom) and the original AR session callbacks, such as session(_ session: ARSession, didUpdate anchors: [ARAnchor])  etc. But I'm not getting the AR session callbacks even after defining: roomCaprutreSession.arsession.delgate = self