AA 3598 then DL 1632 at Houston
Dallas-Fort Worth → Houston → Detroit
Timetable, Houston time
08:32AA 3598 from Dallas-Fort Worth at the gate
11:35DL 1632 to Detroit leaves the gate
3 h 03 apart on the timetable
The last days
AA 3598 and DL 1632 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.