K4 579 then 5X 5603 at O'Hare
Fairbanks → Chicago → Louisville
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
09:265X 5603 to Louisville leaves the gate
17 h 03 apart on the timetable, overnight
5X 5603 leaves 17 h 03 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.