B6 2474 then DL 5595 at JFK
Charleston (South Carolina) → New York → Washington
Timetable, New York time
11:33B6 2474 from Charleston (South Carolina) at the gate
10:25DL 5595 to Washington leaves the gate
22 h 52 apart on the timetable, overnight
DL 5595 leaves 22 h 52 after B6 2474 arrives on the timetable: more than half a day, so not a connection we count.