At one point "Carl" is attempting to light a cigarette. The lighter clicks and clicks multiple times, and "Carl" eventually gives up. He pretends he is smoking the cigarette, but the tip is very clearly not lit. Nor does any smoke come out of his mouth when he exhales.
In the next scene, he sits at a table, and the cigarette is clearly lit then.
In the next scene, he sits at a table, and the cigarette is clearly lit then.
(at around 53 mins) A steward claims he shut the cabin door for Chloe she supposedly left open. The next shot from within the cabin reveals the door is equipped with a door closer thus not requiring manual closing.