K4 556 then KJ 197 at Narita
Chicago → Tokyo → Seoul
Timetable, Tokyo time
21:48K4 556 from Chicago at the gate
21:17KJ 197 to Seoul leaves the gate
23 h 29 apart on the timetable, overnight
KJ 197 leaves 23 h 29 after K4 556 arrives on the timetable: more than half a day, so not a connection we count.