AA 2879 then AA 2595 at Charlotte
Chicago O'Hare → Charlotte → Boston
Timetable, Charlotte time
14:55AA 2879 from Chicago O'Hare at the gate
18:35AA 2595 to Boston leaves the gate
3 h 40 apart on the timetable
The last days
AA 2879 and AA 2595 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.