Honestly I haven't messed with it. But the TV is about a year old and it's probably about 3 model years out at most, so it's fairly recent.

I guess I'm mostly unsure how the TV responds to inputs being turned on and off and how to switch between them. Can I get away with just using the Apple TV and Switch controllers? Or do I have to use the TV remote now?

All the complication has me thinking I might just order another Harmony to have on hand in case this one dies and I'll just keeping it until they both crap out or Logitech goes back on their word to keep supporting it.