Two family members have recently flown CDG --> IAD on Air France 28 (A380). In both instances the scheduled gate arrival time (12:41 pm) was 54 minutes after the scheduled runway arrival time (1:35 pm).
I didn't think IAD was that large an airport!
So what's up with that? Is it just a built-in cushion to make the airline's on-time performance look better? I don't recall seeing anything like this before.