I don't know if you will have the answer to my next question. It is about the interpreting system.
I really like being able to hear the interpretation in one ear and to listen to the source language in the other, so I can compare the two, which Zoom does not currently allow me to do. It is one or the other.
Have you considered using a parallel system?
We could use the telephone and have an earpiece or something. We could set the volume of the interpretation and hear the original version at all times. Witnesses would not have to constantly switch channels either.