UA 5513 then UA 5539 at O'Hare
Moline → Chicago → Moline
Timetable, Chicago time
06:18UA 5513 from Moline at the gate
21:47UA 5539 to Moline leaves the gate
15 h 29 apart on the timetable
UA 5539 leaves 15 h 29 after UA 5513 arrives on the timetable: more than half a day, so not a connection we count.