K4 579 then UA 867 at O'Hare
Fairbanks → Chicago → Tokyo Narita
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
10:40UA 867 to Tokyo Narita leaves the gate
18 h 17 apart on the timetable, overnight
UA 867 leaves 18 h 17 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.