K4 579 then UA 5530 at O'Hare
Fairbanks → Chicago → Madison
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
13:59UA 5530 to Madison leaves the gate
21 h 36 apart on the timetable, overnight
UA 5530 leaves 21 h 36 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.