It's funny. I spend way more time with the little 3.2 system in my family room than I do with my big system in the living room when it comes to just watching TV or casually listening to music and it has a really goofy setup.
The speakers and subs are WiSA, so they have to run off a WiSA transmitter. Until very recently, there was only one transmitter on the market. It is called the SoundSend and it only has 1 HDMI input. This creates some complications.
I connect my components to my TV via an HDMI switch because I don't have enough inputs on the TV and it is less of a PITA to swap components (the TV is on a lift). The switch connects to the TV and the eARC on the TV connects to the SoundSend. The only practical way to control volume is on the TV via CEC, as there is no way to control the SoundSend without using their phone app.
This setup works fine for the most part, but there are two things that annoy me. The first is laggy volume control and I am not sure which end is causing it, the TV or the SoundSend. Either way, it can be frustrating. The second is 100% the TV. If you walk away from the RokuTV for long enough that it goes into screen saver mode, it switches off the HDMI input and reverts to the home screen. That means I have to switch my remote to the RokuTV activity and then back to whatever device I was using. This only takes a few seconds, but it is still irritating.
I am using the flagship remote from Sofa Baton and really like it. It isn't quite as good as the top-end Harmony, but it is pretty close.
I guess my point is that it is shocking what you can do with a little ingenuity if a monster receiver is not an option. Granted, I would not have done this if there WAS another option...