AA 4576 then DL 1266 at Atlanta
Washington National → Atlanta → West Palm Beach
Timetable, Atlanta time
13:03AA 4576 from Washington National at the gate
07:00DL 1266 to West Palm Beach leaves the gate
17 h 57 apart on the timetable, overnight
DL 1266 leaves 17 h 57 after AA 4576 arrives on the timetable: more than half a day, so not a connection we count.