A lot of Exception Handling had already been quite busy, or paying attention to other things, at this exact particular moment, for reasons which will become clear.
But it doesn't take a lot of brains to guess wildly what probably just happened.
Some people at Air Traffic Control, if in on this loop, must have already guessed what happened--or at least, massively updated probabilities based on a guess that two strange events are relevant to each other at all.
Exception Handling makes a blind guess, a snap decision, and orders Air Traffic Control that everyone who knows about a Flight 43 anomaly is to stay inside the same room and not communicate outside of it, except with Flight 43 itself or Exception Handling, for the next ten minutes.