VS 11 then AA 3748 at Boston
London → Boston → Washington National
Timetable, Boston time
20:15VS 11 from London at the gate
07:30AA 3748 to Washington National leaves the gate
11 h 15 apart on the timetable, overnight
Boston’s board gives an arrival time for only about 59% of its flights, so many days show no gate time.
The last days
VS 11 and AA 3748 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.