So I have the ATV 4K (using the Infuse Pro app), LG C9 connected via ARC port (enabled eARC) with the Sonos Arc + HT (Sub Gen2 + OneSL) I have a source file playing with Dolby TrueHD 7.1 track but I am only receiving DD 5.1 on the Sonos system as verified by On the App.
Is this normal ? Shouldn’t I be or supposedly be getting Atmos sound on the Arc Home Theatre?
Netflix, Disney+, and Dolby Atmos test files (playing from Infuse Pro App) are working fine with Atmos though.