K4 579 then UA 5231 at O'Hare
Fairbanks → Chicago → Moline
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
08:45UA 5231 to Moline leaves the gate
16 h 22 apart on the timetable, overnight
UA 5231 leaves 16 h 22 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.