K4 579 then UA 2430 at O'Hare
Fairbanks → Chicago → Philadelphia
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
14:35UA 2430 to Philadelphia leaves the gate
22 h 12 apart on the timetable, overnight
UA 2430 leaves 22 h 12 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.