UA 2099 then UA 5539 at O'Hare
Grand Rapids → Chicago → Moline
Timetable, Chicago time
07:20UA 2099 from Grand Rapids at the gate
21:47UA 5539 to Moline leaves the gate
14 h 27 apart on the timetable
UA 5539 leaves 14 h 27 after UA 2099 arrives on the timetable: more than half a day, so not a connection we count.