DL 5733 then DL 5647 at Boston
New York JFK → Boston → Savannah
Timetable, Boston time
11:10DL 5733 from New York JFK at the gate
11:06DL 5647 to Savannah leaves the gate
23 h 56 apart on the timetable, overnight
DL 5647 leaves 23 h 56 after DL 5733 arrives on the timetable: more than half a day, so not a connection we count.