UA 6080 then AA 4029 at O'Hare
Sioux City → Chicago → Bloomington-Normal
Timetable, Chicago time
07:35UA 6080 from Sioux City at the gate
23:02AA 4029 to Bloomington-Normal leaves the gate
15 h 27 apart on the timetable
AA 4029 leaves 15 h 27 after UA 6080 arrives on the timetable: more than half a day, so not a connection we count.