DL 4827 then AA 5444 at Detroit
Cleveland → Detroit → Washington National
Timetable, Detroit time
09:10DL 4827 from Cleveland at the gate
10:20AA 5444 to Washington National leaves the gate
1 h 10 apart on the timetable
The last days
DL 4827 and AA 5444 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.