Cannot Get Dolby Atmos on Beam Gen2

I currently have a Sonos Beam Gen2 connected to my Samsung 4K TV on HDMI 4eARC.

My Apple TV is connected VIA HDMI to Port 3 of my TV.

I am playing Netflix movies that are Dolby Atmos but the Sonos app shows Dolby Digital 5.1.

Things I have checked…

Netflix is premium Ultra HD and quality is set high.

Apple TV is set to Audio Format “off”

TV audio is set to Bitstream-Dolby Digital 5.1

Can't seem to get “Atmos” to work...

Is there a “Passthrough” audio option on your TV?

This is from the Samsung website and ma help:

Make sure your TV is set up to output Atmos.
1. Atmos will only work when your TV is connected via eARC. It will not work if connected via digital optical cable.
2. Navigate to the sound settings on your TV. (On Samsung TVs, navigate to Settings > Sound > Expert Settings.)
3. Set the audio output to Dolby Digital or Auto.
4. If your TV has a setting for Dolby Atmos compatibility, turn it on.

My TV does not have a “passthrough” option.

Samsung TV is set to Dolby Digital under expert settings.

Userlevel 7

What specific model TV do you have? If you play the film Don’t Look Up on Netflix, what specific audio format is displayed in the Sonos app?

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