AA 3585 then DL 5667 at Boston
Louisville → Boston → Washington National
Timetable, Boston time
16:55AA 3585 from Louisville at the gate
18:00DL 5667 to Washington National leaves the gate
1 h 05 apart on the timetable
The last days
AA 3585 and DL 5667 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.