F9 4409 then DL 1110 at Atlanta
Washington → Atlanta → Mobile
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
15:30DL 1110 to Mobile leaves the gate
16 h 17 apart on the timetable, overnight
DL 1110 leaves 16 h 17 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.