WN 490 then DL 5647 at Boston
Baltimore → Boston → Savannah
Timetable, Boston time
11:10WN 490 from Baltimore 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 WN 490 arrives on the timetable: more than half a day, so not a connection we count.