UA 576 then K4 708 at O'Hare
Minneapolis → Chicago → Seoul
Timetable, Chicago time
13:15UA 576 from Minneapolis at the gate
10:00K4 708 to Seoul leaves the gate
20 h 45 apart on the timetable, overnight
K4 708 leaves 20 h 45 after UA 576 arrives on the timetable: more than half a day, so not a connection we count.