F9 4702 then DL 950 at Atlanta
Austin → Atlanta → Washington National
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
16:40DL 950 to Washington National leaves the gate
21 h 30 apart on the timetable, overnight
DL 950 leaves 21 h 30 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.