There is a slight delay, but not much. What you were seeing most likely is the last known location and he's flying in an area where there is no public ads-b exchange receivers. I'm not seeing AF2 at all currently.Is this tracker on delay as it shows him currently over Evansville, IN
you also have back up and frequent shadow 09-0015 nearby but won't land at same airport usually.OK here we go - 82-8000 is AF1 or Spare, Because 92-9000 is trailing right behind. The earlier landing in Tulsa was a 757 was IDd as AF2 the VP obviously. So AF1 and the Spare have yet to ID as such.