I have a 50" 4k TCL Android TV 50S434

I had purchased the CCGTV before I bought the tv. I've been fine with the default UI, appears to be 9 (whereas the CCGTV is on 10), but I would like to get some use out of the CCGTV instead of it sitting in a drawer.

I'm having issues with the remote. I figured this would be a flawless process since they have the same buttons and both run Android TV but the volume buttons don't work, nor does the input button. You can kind of bypass the volume by having it control the cc volume instead, which is fine. But I do also have a Nintendo switch plugged in. I would, ideally, like to only use the cc remote.

I feel like maybe I'm missing something. I've dug through the settings. I have both together in my "home" with a Google nest hub display, as well as 3 nest cameras. I can ask the assistant to switch inputs and that works.

But then that leads to my other issue... sleep timer? I use the sleep timer every night. I'm nowhere near my data cap but we do have data caps here and I don't want stuff streaming all night. When I ask the assistant to set a sleep timer, she seems like she wants to but doesn't actually do it.

Maybe I'm missing something? Maybe I'm not? Maybe using the CCGTV on top of Android TV is unnecessary and I'm making it more complicated for no reason. Maybe this particular tv is just a bad match for the CCGTV?

I'm also considering buying the $99 Google Nest Audio to pair with the tv / nest hub. I'm wondering if the CCGTV will further complicate things or if it'll work fine?