AA 4170 then AA 6256 at O'Hare
Oklahoma City → Chicago → Sioux Falls
Timetable, Chicago time
15:00AA 4170 from Oklahoma City at the gate
16:47AA 6256 to Sioux Falls leaves the gate
1 h 47 apart on the timetable
The last days
AA 4170 and AA 6256 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.