AA 770 then AA 2952 at Miami
Charlotte → Miami → Punta Cana
Timetable, Miami time
09:15AA 770 from Charlotte at the gate
10:10AA 2952 to Punta Cana leaves the gate
55 min apart on the timetable
The last days
AA 770 and AA 2952 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.