AA 6299 then UA 5539 at O'Hare
Flint → Chicago → Moline
Timetable, Chicago time
07:00AA 6299 from Flint at the gate
21:47UA 5539 to Moline leaves the gate
14 h 47 apart on the timetable
UA 5539 leaves 14 h 47 after AA 6299 arrives on the timetable: more than half a day, so not a connection we count.