DL 113 then AA 4582 at Boston
Rome → Boston → Washington National
Timetable, Boston time
14:31DL 113 from Rome at the gate
17:41AA 4582 to Washington National leaves the gate
3 h 10 apart on the timetable
The last days
DL 113 and AA 4582 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.