Dolby Digital Plus 5.1 in Settings but not seeing Dolby Atmos indicator. TV is Sony XBR75X850E over HDMI ARC. Content is El Camino 4K on Netflix. What does the indicator look like?
Sonos Arc 7.1.4 Home Theater Bundle (Black) Includes Sonos Arc Dolby Atmos® sound bar, Sub (Gen 3), and two Sonos Era 300s at Crutchfield
Sonos Arc review: The smart Dolby Atmos soundbar to beat