UA 3501 then KE 38 at O'Hare
Kansas City → Chicago → Seoul
Timetable, Chicago time
17:05UA 3501 from Kansas City at the gate
11:10KE 38 to Seoul leaves the gate
18 h 05 apart on the timetable, overnight
KE 38 leaves 18 h 05 after UA 3501 arrives on the timetable: more than half a day, so not a connection we count.