F9 4409 then DL 2435 at Atlanta
Washington → Atlanta → Melbourne (Florida)
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
21:41DL 2435 to Melbourne (Florida) leaves the gate
22 h 28 apart on the timetable, overnight
DL 2435 leaves 22 h 28 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.