AA 4455 then AA 1184 at Boston
Washington National → Boston → Miami
Timetable, Boston time
07:46AA 4455 from Washington National at the gate
17:15AA 1184 to Miami leaves the gate
9 h 29 apart on the timetable
The last days
AA 4455 and AA 1184 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.