Were they freefall or static line? FWIW when we used to jump from Chinook back ramp on static line, it was done at low forwards speed I think partly so that the used static lines could be recovered between jumpers and partly so that we didn’t end up too far apart when we hit the deck. It can be hard enough finding the rest of your troop at night on a normal drop, let alone when wearing NBC kit on the Chinook drops.