Cb would have had conversations with his lawyers regarding these trial, so if they were being listened to, it would very much be relevant to current proceedings.I think this alleged wiretapping is just to create noise. If there were such concerns CB's lawyers would have raised it earlier when he was still there, since it does not appear to have any bearings on the trial. unless the prosecution are using any of these alleged wiretapped conversations as evidence, I really do not see the relevance.
Perhaps the trial, in front of the judges is exactly the place for these issues to be raised.