K4 579 then UA 1544 at O'Hare
Fairbanks → Chicago → Fort Myers
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
13:30UA 1544 to Fort Myers leaves the gate
21 h 07 apart on the timetable, overnight
UA 1544 leaves 21 h 07 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.