most of the clips usually just show Chuck reacting to her first round of screeching..
here is a longer clip.
https://www.youtube.com/watch?v=jelY_icJ1y8
I cant see where John reacts when he finds out her mic was cut
here is another one.
Rolling stones Circus concert. It went on until the wee hours and people were high.
Some legendary people were on stage playing with John Lennon and there is Yoko screaming away while Clapton and others are just trying to do their job. The violinist actually scoots back a few times from her
https://www.youtube.com/watch?v=0hDjO6Y17zM