Qatar was always famous for really dumb knee jerk reactions… 2 guys from same country get into a fight, let’s prohibit all same nationalities from flying together! My favorite asinine change to procedures was when someone missed a radio call….procedures were changed that said headsets had to be used until top of climb but the intercom must be shut off above fl200. So now 2 pilots talking on noise canceling headsets, monitoring 3 freq, and can’t really communicate well amongst each other. This is better how?