WN 3704 then B6 1355 at Boston
Austin → Boston → Washington National
Timetable, Boston time
12:50WN 3704 from Austin at the gate
16:10B6 1355 to Washington National leaves the gate
3 h 20 apart on the timetable
The last days
WN 3704 and B6 1355 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.