AA 4264 then AA 775 at O'Hare
Sioux Falls → Chicago → Washington National
Timetable, Chicago time
09:02AA 4264 from Sioux Falls at the gate
09:50AA 775 to Washington National leaves the gate
48 min apart on the timetable
The last days
AA 4264 and AA 775 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.