We seem to have got off the thread here. The question wasn't so much what the guy's sartorial sense was(although it could have been better), but whether he should have been on the flightdeck. Sure we all have to answer the call of nature, especially those of us whom age has blessed with a very short-haul bladder, but I would have thought that any change in the aircraft's attitude, speed or power setting would have most captains scurrying back to the pointed end. Could be the other pilot has been incapacitated? Could be his workload is building up? As for "one pilot, one autopilot and TCAS is enough", not in the London TMA it isn't. Ore am I just getting too old and crusty?