DL 499 then DL 5714 at Boston
Denver → Boston → Philadelphia
Timetable, Boston time
17:27DL 499 from Denver at the gate
17:25DL 5714 to Philadelphia leaves the gate
23 h 58 apart on the timetable, overnight
DL 5714 leaves 23 h 58 after DL 499 arrives on the timetable: more than half a day, so not a connection we count.