If you’re using a receiver (amp) then your ATV should be connected to your receiver directly via hdmi and then from your receiver to your tv via hdmi. Everything will then communicate via CEC over hdmi. The ATV will receive its signal via Bluetooth and transmit it to the proper device. This is assuming you have a receiver with hdmi switching.

People put too much stock in the Atmos name. All its is is object based tracking, but if you don’t have a 5.2.2, 7.4.2, 9.4.2 system in your home it doesn’t really matter. The majority of people I see worrying about Atmos have a soundbar which isn’t going to give you full atmos. There are very few people in the world who could sit in a room as tell you the difference between DTS-MA, True-HD and DD Atmos.

Do you have a full atmos surround sound system in your home that is calibrated to take advantage of object based tracking?

What brand/model of tv do you have? What are the display settings you have on the ATV? (Set the default to 4k SDR and turn on match content and frame rate I. The display options). Ensure the ATV has the control other devices option turned on. Make sure the TV has CEC turned on and that it has found the ATV through the discovery of new devices. This should allow your TV to turn on fastest.

You also hide it like page 3 or 4 of a folder already in use.