AA 2379 then G7 4177 at O'Hare
Seattle (SEA) → Chicago → Buffalo
Timetable, Chicago time
06:05AA 2379 from Seattle (SEA) at the gate
06:56G7 4177 to Buffalo leaves the gate
51 min apart on the timetable
The last days
AA 2379 and G7 4177 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.