AA 4383 then AA 6424 at O'Hare
Des Moines → Chicago → Kansas City
Timetable, Chicago time
09:10AA 4383 from Des Moines at the gate
16:55AA 6424 to Kansas City leaves the gate
7 h 45 apart on the timetable
The last days
AA 4383 and AA 6424 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.