The miracles of electronics & the Internet never cease to amaze me! Electronics amazed me in 1962 when I got my EE degree from Princeton & they still have not failed me.
When I tried Hangouts this afternoon for the first time since last evening, IT WORKED in the Retro Mode; but not in the Ultra Mode.
I have no idea why b/c I haven't done anything different from before nor changed any setting, etc.
Thanks for all the help and interest in this topic, which I started a couple of days ago. I shall now exit this topic & hope Hangouts doesn't exit my useful tools.