K4 579 then UA 695 at O'Hare
Fairbanks → Chicago → San Juan
Timetable, Chicago time
16:23K4 579 from Fairbanks at the gate
14:16UA 695 to San Juan leaves the gate
21 h 53 apart on the timetable, overnight
UA 695 leaves 21 h 53 after K4 579 arrives on the timetable: more than half a day, so not a connection we count.