AA 2999 then DL 3902 at O'Hare
Dallas-Fort Worth → Chicago → Detroit
Timetable, Chicago time
10:05AA 2999 from Dallas-Fort Worth at the gate
11:19DL 3902 to Detroit leaves the gate
1 h 14 apart on the timetable
Today
From the airport’s board at 16:41 Chicago time
09:46AA 2999 reached the gate19 min early
11:35DL 3902 left the gate16 min late
1 h 49 between the gates
The last days
AA 2999 and DL 3902 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.