F9 4702 then AA 4800 at Atlanta
Austin → Atlanta → Washington National
Timetable, Atlanta time
19:10F9 4702 from Austin at the gate
17:01AA 4800 to Washington National leaves the gate
21 h 51 apart on the timetable, overnight
AA 4800 leaves 21 h 51 after F9 4702 arrives on the timetable: more than half a day, so not a connection we count.