I have two 70” Samsung TVs mounted right next to each other on my wall in my basement. I’m trying to figure out a way to toggle sound back and forth using one Beam.  I tried using an HDMI switch but it doesn’t work.  Any suggestions?  Someone recommended I use the HDMI switch with audio optical HDMI adapters instead of the ARC HDMI ports.  Not sure what else to try.  Seems this should be an easy fix.