Originally Posted by ethernal

Unfortunately this is one of those grey areas that you probably won't win. There's no evidence that you got to the gate on time, and since the flight wasn't technically oversold, you wouldn't inherently be eligible for IDB compensation.

Any chance you snapped a picture of the empty gate with a timestamp before T-15? You can probably submit a web form with that as evidence and request more comp and they'll probably give it to you to avoid trouble. The 5K "goodwill gesture" is just what a front line agent can give without supervisor review.