AA 1509 then AA 834 at O'Hare
Boston → Chicago → Phoenix
Timetable, Chicago time
09:05AA 1509 from Boston at the gate
15:13AA 834 to Phoenix leaves the gate
6 h 08 apart on the timetable
The last days
AA 1509 and AA 834 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.