AA 2184 then AA 2187 at Charlotte
Boston → Charlotte → Miami
Timetable, Charlotte time
13:49AA 2184 from Boston at the gate
17:30AA 2187 to Miami leaves the gate
3 h 41 apart on the timetable
The last days
AA 2184 and AA 2187 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.