AA 4588 then AA 3021 at JFK
Cleveland → New York → Miami
Timetable, New York time
12:29AA 4588 from Cleveland at the gate
19:00AA 3021 to Miami leaves the gate
6 h 31 apart on the timetable
The last days
AA 4588 and AA 3021 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.