AA 4264 then UA 6016 at O'Hare
Sioux Falls → Chicago → Green Bay
Timetable, Chicago time
09:02AA 4264 from Sioux Falls at the gate
21:25UA 6016 to Green Bay leaves the gate
12 h 23 apart on the timetable
UA 6016 leaves 12 h 23 after AA 4264 arrives on the timetable: more than half a day, so not a connection we count.