AA 4716 then DL 2822 at Detroit
Washington National → Detroit → St Louis
Timetable, Detroit time
12:39AA 4716 from Washington National at the gate
16:39DL 2822 to St Louis leaves the gate
4 h apart on the timetable
The last days
AA 4716 and DL 2822 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.