DL 5445 then DL 5850 at JFK
Charleston (South Carolina) → New York → Jacksonville
Timetable, New York time
09:01DL 5445 from Charleston (South Carolina) at the gate
08:50DL 5850 to Jacksonville leaves the gate
23 h 49 apart on the timetable, overnight
DL 5850 leaves 23 h 49 after DL 5445 arrives on the timetable: more than half a day, so not a connection we count.