This shows how to connect your Sonos Arc to a Samsung QLED TV. (Q80T featured). This uses an HDMI cable from the Sonos Arc connected to the HDMI (ARC) input on the TV. This connection type should (but may not) also work with other brands of TV's that have HDMI (ARC) inputs. If you are looking to see if your ARC is receiving Atmos signal or not, watch this video here. https://youtu.be/nLlaGs2lhIw