UA 318 then UA 5539 at O'Hare
Baltimore → Chicago → Moline
Timetable, Chicago time
07:31UA 318 from Baltimore at the gate
21:47UA 5539 to Moline leaves the gate
14 h 16 apart on the timetable
UA 5539 leaves 14 h 16 after UA 318 arrives on the timetable: more than half a day, so not a connection we count.