AA 3105 then DL 1824 at Miami
Austin → Miami → Detroit
Timetable, Miami time
13:39AA 3105 from Austin at the gate
18:30DL 1824 to Detroit leaves the gate
4 h 51 apart on the timetable
The last days
AA 3105 and DL 1824 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.