AA 5510 then AA 2403 at Atlanta
Washington National → Atlanta → Dallas-Fort Worth
Timetable, Atlanta time
23:23AA 5510 from Washington National at the gate
20:04AA 2403 to Dallas-Fort Worth leaves the gate
20 h 41 apart on the timetable, overnight
AA 2403 leaves 20 h 41 after AA 5510 arrives on the timetable: more than half a day, so not a connection we count.