F9 4409 then DL 5429 at Atlanta
Washington → Atlanta → Columbus (Georgia)
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
20:50DL 5429 to Columbus (Georgia) leaves the gate
21 h 37 apart on the timetable, overnight
DL 5429 leaves 21 h 37 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.