UA 6080 then AA 3426 at O'Hare
Sioux City → Chicago → Green Bay
Timetable, Chicago time
07:35UA 6080 from Sioux City at the gate
23:00AA 3426 to Green Bay leaves the gate
15 h 25 apart on the timetable
AA 3426 leaves 15 h 25 after UA 6080 arrives on the timetable: more than half a day, so not a connection we count.