AA 6587 then DL 5714 at Philadelphia
Atlantic City → Philadelphia → Boston
Timetable, Philadelphia time
20:25AA 6587 from Atlantic City at the gate
19:55DL 5714 to Boston leaves the gate
23 h 30 apart on the timetable, overnight
DL 5714 leaves 23 h 30 after AA 6587 arrives on the timetable: more than half a day, so not a connection we count.