My initial setup went fine and the Beam worked as advertised. The setup was temporary while the Pro Wall Set-up was being finished. After mounting the TV, and the Beam along with a DVD Blue Ray the audio playback went from ARC/HDMI to television thru the Beam (and no Dolby & Atmos etc)
Sonos App would not resolve to getting a good CEC (Samsung AnyNet) connection. The steps in the following URL worked: https://en.community.sonos.com/home-theater-228993/enabling-cec-on-your-tv-for-beam-6810049/index1.html#post16251595
resolved the issue.
My hunch is the BlueRay was hogging the connection....
Yesterday I believed I had solved the issue....today I turned on the television and immediately could tell the sound was not right. Checking the Sonos app the Media Room did not show as active. The television set-up under Room Settings showed no CEC connection. The BlueRay player was connected yesterday and today I have disconnected it in attempt to reset as per above link.
Sporadic CEC issues and degraded function of the Sonos Beam are of grave concern for me. The PlayBar & PlayBase were both terrible products (for spoken word). The Beam sound is wonderful but these connectivity issues need a timely solution. Please provide a solid and sustainable solution. Thank you.