GK 116 then TW 250 at Narita
Sapporo → Tokyo → Seoul
Timetable, Tokyo time
19:55GK 116 from Sapporo at the gate
08:55TW 250 to Seoul leaves the gate
13 h apart on the timetable, overnight
TW 250 leaves 13 h after GK 116 arrives on the timetable: more than half a day, so not a connection we count.