AA 433 then AA 4420 at Boston
Dallas-Fort Worth → Boston → New York LaGuardia
Timetable, Boston time
11:51AA 433 from Dallas-Fort Worth at the gate
14:31AA 4420 to New York LaGuardia leaves the gate
2 h 40 apart on the timetable
Boston’s board gives an arrival time for only about 59% of its flights, so many days show no gate time.
The last days
AA 433 and AA 4420 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.