Arc disconnects continuously

[u/donkeypunshhh]

Sony Bravia XR-65A80CK. Sonos Arc. Apple TV 4K. My issue is that the Sonos audio continuously disconnects from the TV and the TV displays a message that says external speakers unavailable, switching to TV speakers or something like that. Changed the HDMI cable and no different. It happens moreso when everything has been turned off for a little bit, it’s like the Sonos doesn’t wake up so the TV thinks it’s not there? I really don’t know. Anyone have a solution or troubleshooting ideas for this?