AA 3733 then AA 3815 at O'Hare
Kansas City → Chicago → Hartford
Timetable, Chicago time
09:05AA 3733 from Kansas City at the gate
14:22AA 3815 to Hartford leaves the gate
5 h 17 apart on the timetable
The last days
AA 3733 and AA 3815 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.