AA 3375 then AA 3107 at O'Hare
Fargo → Chicago → Boston
Timetable, Chicago time
14:45AA 3375 from Fargo at the gate
19:03AA 3107 to Boston leaves the gate
4 h 18 apart on the timetable
The last days
AA 3375 and AA 3107 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.