I've never had my TV turn on unexpectedly (unless a cat sits on the remote). My issue is even stranger.

While watching the XBox, occasionally the TV will change sources and show 'Live TV' (for some reason, something Runway). The audio won't change, just the source on the TV. When I change it back to the XBox source, the PS5 will turn on.

Sometimes it happens quite often, other times not at all. It only happens while streaming a movie/tv show though. I've never had it change the source while watching a Blu-Ray or playing a game. I've never had it happen while using the PS5 as the streaming source (ESPN+ is trash on the XBox, but great on the PS5 - go figure).

I haven't been able to figure it out at all. I even turned off the TV networking and swapped out the receive to TV HDMI.