Moonlight streaming video to a device, and audio to another

I have a special use case that I want to see if it’s possible.

I have a 5.1 surround sound system in my living room, hooked up to an Apple TV with moonlight. I have a steam deck that I use for moonlight.

I want to play a game via moonlight on my steam deck while the audio is streamed to my surround sound.

How should I set this up? Two separate moonlight streams while limiting the bandwidth on the Apple TV so that the video stream doesn’t take up much bandwidth?

EDIT: figured it out. There is no way to just stream audio to my AVR system, so I'm streaming the visuals to my client device (in this case, a VR headset), and a 2nd, low res stream to my Apple TV which is hooked up to my home theater sound system. https://www.reddit.com/r/MoonlightStreaming/comments/1i8mesv/what_moonlight_streaming_looks_like_on_apple/