F9 4409 then DL 1335 at Atlanta
Washington → Atlanta → Austin
Timetable, Atlanta time
23:13F9 4409 from Washington at the gate
21:55DL 1335 to Austin leaves the gate
22 h 42 apart on the timetable, overnight
DL 1335 leaves 22 h 42 after F9 4409 arrives on the timetable: more than half a day, so not a connection we count.