AA 5477 then AA 3358 at O'Hare
Madison → Chicago → Sioux Falls
Timetable, Chicago time
08:50AA 5477 from Madison at the gate
09:45AA 3358 to Sioux Falls leaves the gate
55 min apart on the timetable
The last days
AA 5477 and AA 3358 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.