You can’t use the tv app or the tv remote to turn the tv off.
You can still turn on/off the tv channels manually, but you can’t change them to show up on the tv screen.
If you want to change the channel, you have to manually open the settings app or launch the tv control app.
Theres no way to switch channels to different channels.
Theres no option to set your own channels to the same station.
There is no way for you to control what the channels are showing on the current channel.
There is no ability to change to another channel.