AA 4689 then AA 4481 at Atlanta
Washington National → Atlanta → New York LaGuardia
Timetable, Atlanta time
19:44AA 4689 from Washington National at the gate
19:28AA 4481 to New York LaGuardia leaves the gate
23 h 44 apart on the timetable, overnight
AA 4481 leaves 23 h 44 after AA 4689 arrives on the timetable: more than half a day, so not a connection we count.