AA 2903 then K4 810 at O'Hare
Washington National → Chicago → Anchorage
Timetable, Chicago time
07:26AA 2903 from Washington National at the gate
04:00K4 810 to Anchorage leaves the gate
20 h 34 apart on the timetable, overnight
K4 810 leaves 20 h 34 after AA 2903 arrives on the timetable: more than half a day, so not a connection we count.