AA 4575 then AA 4463 at JFK
Cleveland → New York → Washington National
Timetable, New York time
12:06AA 4575 from Cleveland at the gate
17:59AA 4463 to Washington National leaves the gate
5 h 53 apart on the timetable
The last days
AA 4575 and AA 4463 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.