Originally Posted by
Often1
These complaints all depend on where one sits. The day you are stuck in Preclearance because some fool in front of you has caused a problem and then miss your flight, you will curse AC for not holding the aircraft.
No, I'll curse the fool in front of me.
I don't think anyone would object to a 5 minute wait to allow someone to make the flight, but unless it's a situation where an agent post-CBP calls the gate to say "he's out of CBP and running", you just don't know how long you're going to have to wait.