DL 514 then B6 2355 at Boston
Phoenix → Boston → Washington National
Timetable, Boston time
20:16DL 514 from Phoenix at the gate
09:22B6 2355 to Washington National leaves the gate
13 h 06 apart on the timetable, overnight
B6 2355 leaves 13 h 06 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.