Again, I would like to stress that I know all of this is unlikely, but there's is no reason why both planes would need to coordinate this down to the second. Mh

Again, I would like to stress that I know all of this is unlikely, but there's is no reason why both planes would need to coordinate this down to the second. Mh370 goes offline, takes an hour to get into position with ab123. Then they make the switch. Once mh370 goes missing, it stays missing. The trick is in making it look like ab123 is behaving normally. And while everyone is distracted by the search for mh370, I wonder how closely they would be looking at irregularities in other flights that aren't missing and aren't reporting any problems.