AA 3559 then UA 5940 at O'Hare
Moline → Chicago → Peoria
Timetable, Chicago time
18:29AA 3559 from Moline at the gate
16:40UA 5940 to Peoria leaves the gate
22 h 11 apart on the timetable, overnight
UA 5940 leaves 22 h 11 after AA 3559 arrives on the timetable: more than half a day, so not a connection we count.