K4 579 then UA 2809 at O'Hare
Fairbanks → Chicago → Dallas-Fort Worth
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
10:40UA 2809 to Dallas-Fort Worth leaves the gate
18 h 17 apart on the timetable, overnight
UA 2809 leaves 18 h 17 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.