F9 4702 then AA 5503 at Atlanta
Austin → Atlanta → Washington National
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
16:55AA 5503 to Washington National leaves the gate
21 h 45 apart on the timetable, overnight
AA 5503 leaves 21 h 45 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.