DL 5696 then DL 5845 at Boston
New York LaGuardia → Boston → Philadelphia
Timetable, Boston time
07:15DL 5696 from New York LaGuardia at the gate
06:40DL 5845 to Philadelphia leaves the gate
23 h 25 apart on the timetable, overnight
DL 5845 leaves 23 h 25 after DL 5696 arrives on the timetable: more than half a day, so not a connection we count.