AA 4635 then AA 2452 at O'Hare
Washington National → Chicago → Miami
Timetable, Chicago time
23:30AA 4635 from Washington National at the gate
06:10AA 2452 to Miami leaves the gate
6 h 40 apart on the timetable, overnight
The last days
AA 4635 and AA 2452 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.