AA 2143 then AA 1442 at Boston
Chicago O'Hare → Boston → Dallas-Fort Worth
Timetable, Boston time
11:59AA 2143 from Chicago O'Hare at the gate
14:29AA 1442 to Dallas-Fort Worth leaves the gate
2 h 30 apart on the timetable
The last days
AA 2143 and AA 1442 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.