AA 3572 then UA 5539 at O'Hare
Columbus (Ohio) → Chicago → Moline
Timetable, Chicago time
09:04AA 3572 from Columbus (Ohio) at the gate
21:47UA 5539 to Moline leaves the gate
12 h 43 apart on the timetable
UA 5539 leaves 12 h 43 after AA 3572 arrives on the timetable: more than half a day, so not a connection we count.