AA 4775 then AA 73 at O'Hare
Madison → Chicago → Buffalo
Timetable, Chicago time
06:14AA 4775 from Madison at the gate
07:00AA 73 to Buffalo leaves the gate
46 min apart on the timetable
The last days
AA 4775 and AA 73 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.