my Brussels Airlines departure out of LHR pushed at ETD -12 last Saturday , I was last man on with 15 minutes to go, and the Emirates on stand next to me at Glasgow last night was also pushed a quarter of an hour early.
I'd a boss once who was (quite rightly) very keen for on-time departures.
At one domestic station he leant on the station staff so much that he departed significantly ahead of schedule.
On the taxi out, company called to say that a passenger had turned up on time but missed the flight due early push.
Back to the terminal to pick up passenger followed by a (now) late departure.
Didn't know whether to

or