AA 3101 then DL 5491 at Detroit
Dallas-Fort Worth → Detroit → Louisville
Timetable, Detroit time
10:45AA 3101 from Dallas-Fort Worth at the gate
15:50DL 5491 to Louisville leaves the gate
5 h 05 apart on the timetable
The last days
AA 3101 and DL 5491 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.