With no bumps in the road, no wipes etc., it should take longer than an hour. Not calling you a liar. You may be exaggerating or just didn't time it and ventured a guess. Just in the time it takes for the Critical objectives to spawn would mean it would take over an hour. With no wipes and minimal time in the air lock, it should be around an hour and a half. Each round takes around 20 minutes, with about 5 total sitting in the airlock.