I had to go the other way. The Apple TV controls the LG. It wakes it, controls the volume and turns it off when it sleeps.

Mine will turn my LG on, control the volume, do all of that, it just won't ever turn it off. The AppleTV will turn itself off, but the TV itself will revert back to its screen saver display complaining about No Input.

I've got a Apple TV -> Denon -> LG C3. CEC on the appleTV remote will turn all 3 on, and long pressing (power button on appletv remote) will turn all 3 off, not just screen saver with input.

My Samsung frame does that too, some TVs ignore the off CEC command. It might be a setting you can control on the tv. Last time I checked the frame did not have that option.

I have an LG TV and I haven't seen the remote in months.

Sit down, press button on ATV remote or console controller. TV comes on.

I only needed it when it started complaining about software updates, but now with the AI version I took the TV offline and won't be updating it ever.