AA 4349 then AA 5503 at Atlanta
New York LaGuardia → Atlanta → Washington National
Timetable, Atlanta time
14:31AA 4349 from New York LaGuardia at the gate
17:16AA 5503 to Washington National leaves the gate
2 h 45 apart on the timetable
The last days
AA 4349 and AA 5503 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.