AA 6228 then UA 5609 at O'Hare
Sioux Falls → Chicago → Appleton
Timetable, Chicago time
09:10AA 6228 from Sioux Falls at the gate
22:00UA 5609 to Appleton leaves the gate
12 h 50 apart on the timetable
UA 5609 leaves 12 h 50 after AA 6228 arrives on the timetable: more than half a day, so not a connection we count.