DL 2614 then AA 2159 at Boston
Minneapolis → Boston → Washington National
Timetable, Boston time
23:44DL 2614 from Minneapolis at the gate
06:00AA 2159 to Washington National leaves the gate
6 h 16 apart on the timetable, overnight
The last days
DL 2614 and AA 2159 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.