As the aircraft was on autopilot locked onto the ILS neither pilot noticed the split throttles for at least a minute.
Exactly why some of us have, for some time, had hands-on-throttle-and-stick when not "clean". The message did take some time to get through, but thankfully our outfit now mandates this.
Tee-emm, while your sim buddies got "sim-killed", but these
poor bastards really did get the chop from exactly the same thing.