AA 1204 then AA 2947 at Charlotte
Buffalo → Charlotte → Boston
Timetable, Charlotte time
07:50AA 1204 from Buffalo at the gate
10:20AA 2947 to Boston leaves the gate
2 h 30 apart on the timetable
The last days
AA 1204 and AA 2947 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.