Originally Posted by
andersonCooper
In OP's case it's right at the T-10 mark - could be just closed.
I agree you don't need to allow extra time for someone else not doing their jobs, and AA's policy is 10 mins. But there are too many factors in operations (which AA is usually the worst among 3), and I have not yet seen an airline never closes door early at least once. Not everywhere operates like Japan.
I love the Japan inclusion

A train company in Japan apologizes because it left 20 seconds early even though nobody complained and nobody was affected. I feel like Germany, Switzerland, and Austria are about the same level when it comes to timeliness.