AA 3733 then AA 3449 at O'Hare
Kansas City → Chicago → Fargo
Timetable, Chicago time
09:05AA 3733 from Kansas City at the gate
10:00AA 3449 to Fargo leaves the gate
55 min apart on the timetable
The last days
AA 3733 and AA 3449 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.