F9 4409 then DL 2381 at Atlanta
Washington → Atlanta → Houston Hobby
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
15:15DL 2381 to Houston Hobby leaves the gate
16 h 02 apart on the timetable, overnight
DL 2381 leaves 16 h 02 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.