AA 418 then AA 604 at Charlotte
Boston → Charlotte → Miami
Timetable, Charlotte time
08:25AA 418 from Boston at the gate
09:20AA 604 to Miami leaves the gate
55 min apart on the timetable
The last days
AA 418 and AA 604 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.