They weren’t even in the plane during the 90 minute period. They were abducted by space aliens and before being sent back to the plane, their memories were scrubbed of the experience.
I don’t know where you get such crazy information.
They were in the cockpit.
What happened was that the aliens took their brains for examination to see if earthlings can be programmed. They removed the brains and took them to the mother ship where they were examined.
They put their brains back after the tests were completed.
That is why they can’t remember what happened and had to come up with the laptop story.
As a matter of fact, their brains must have been damaged in the test, otherwise they would have come up with a better excuse than playing with laptops.