DL 712 then DL 8844 at Atlanta
Washington National → Atlanta → Detroit
Timetable, Atlanta time
21:38DL 712 from Washington National at the gate
09:28DL 8844 to Detroit leaves the gate
11 h 50 apart on the timetable, overnight
The last days
DL 712 and DL 8844 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.