AA 4711 then DL 5845 at Philadelphia
Columbus (Ohio) → Philadelphia → Boston
Timetable, Philadelphia time
09:44AA 4711 from Columbus (Ohio) at the gate
09:00DL 5845 to Boston leaves the gate
23 h 16 apart on the timetable, overnight
DL 5845 leaves 23 h 16 after AA 4711 arrives on the timetable: more than half a day, so not a connection we count.