B6 782 then DL 5714 at Boston
Richmond → Boston → Philadelphia
Timetable, Boston time
17:44B6 782 from Richmond at the gate
17:25DL 5714 to Philadelphia leaves the gate
23 h 41 apart on the timetable, overnight
DL 5714 leaves 23 h 41 after B6 782 arrives on the timetable: more than half a day, so not a connection we count.