AA 4002 then UA 5539 at O'Hare
Northwest Arkansas → Chicago → Moline
Timetable, Chicago time
07:15AA 4002 from Northwest Arkansas at the gate
21:47UA 5539 to Moline leaves the gate
14 h 32 apart on the timetable
UA 5539 leaves 14 h 32 after AA 4002 arrives on the timetable: more than half a day, so not a connection we count.