If comments by Group B are considered "noise" by Group A, while Group A's own comments are considered "signal" then I would suggest that being unable to maintai

If comments by Group B are considered "noise" by Group A, while Group A's own comments are considered "signal" then I would suggest that being unable to maintain a "good" signal to noise ratio indicates that the signal/noise has reversed. The argument you describe is entirely predicated on the fact that you are right (you being whomever) and they are wrong. This is where the breakdown occurs.