AA 1225 then AA 1140 at Boston
Miami → Boston → Charlotte
Timetable, Boston time
13:55AA 1225 from Miami at the gate
16:49AA 1140 to Charlotte leaves the gate
2 h 54 apart on the timetable
The last days
AA 1225 and AA 1140 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.