Q1: If I give Alexa an instruction, it responds but no sound, TV on or Off.
I can make a request to Alexa: ' lay radio station on soundbar' Alexa replies Playing radio station.
If TV is On or Off, Alexa makes the same response.
However, no sound is delivered.
Q2: On Sunday, Alexa switched itself on and played a radio station. TV was off. Hmm.....
Yes I have another Alexa in the same room, but it does not respond.