I connected my ARC to my Sony TV (XBR-65X850D) via the HDMI4-Arc port. All functions great as long as the ARC is the only device connected to any HDMI input on the TV. The moment I connect my Apple TV / any other device to any other HDMI port, the ARC disconnects. I am not able to control it via my phone either. Once I unplug the other devices, the ARC reconnects and functions normally.
Just wondering if anyone else has had this issue or what could be causing it?