yeah, that bit me last week ... IAD-LAX landed ~0925; I was booked on LAX-SEA at 1110 but was hoping to make the 0950 so I could get to at least part of the Sounders celebration parade ... texted as soon as we cleared the runway and got “someone will be with you in less than 5 minutes” ... I was in 1A; grabbed my backpack out of the bin and hustled up the 65B jetway without waiting for anyone, got to 64A at 0940 as the GA was still typing something, asked “Room for one more?” ... she spent about another 10-15 seconds typing before she looked at me blankly ... I asked again, she said, “Oh. Uh, no, there were a few seats, but it’s closed.”