Ouch! TIL “HEC.” Presumably the device you connect to needs to proxy that channel. My LG TV keeps saying it needs an internet connection to access any of its smart features, so I guess my Apple TV doesn’t do that (or my TV is sneakier than I’d like to believe).

Thanks, good to know.

Edit: seems the ethernet channell is used by ARC, which newer apple TVs supports, so that’s probably crowding out support for HEC. This also suggests HEC isn’t widely supported. I can settle down again.