Remote control will not control SONOS played music volume
From everything I have read I went two steps forward and one step backwards. I had the playbar and LG OLED55E6 connected via Optical. The remote volume controls worked for the TV and for offline music when the TV was off.
Upgraded to a new LG OLED65C3 and Sonos ARC. The TV and ARC work beautifully together. However now I understand there is no way to control the ARC for music volume via the LG Magic remote. Yes I can ask Alexa to adjust volumes but it sure was nice to grab the remote and turn music volume down when the phone rings or company is in the room . Now I have to scramble for a phone or command Alexa to control the volume.
Not sure why SONOS did not engineer a way for a RF remote to work via CEC and direct when CEC is inactive.