F9 4409 then DL 2850 at Atlanta
Washington → Atlanta → Charleston (South Carolina)
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
22:44DL 2850 to Charleston (South Carolina) leaves the gate
23 h 31 apart on the timetable, overnight
DL 2850 leaves 23 h 31 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.