DL 5278 then DL 2777 at Detroit
Des Moines → Detroit → Atlanta
Timetable, Detroit time
15:10DL 5278 from Des Moines at the gate
19:48DL 2777 to Atlanta leaves the gate
4 h 38 apart on the timetable
The last days
DL 5278 and DL 2777 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.