MM 582 then TW 250 at Narita
Sapporo → Tokyo → Seoul
Timetable, Tokyo time
20:05MM 582 from Sapporo at the gate
08:55TW 250 to Seoul leaves the gate
12 h 50 apart on the timetable, overnight
TW 250 leaves 12 h 50 after MM 582 arrives on the timetable: more than half a day, so not a connection we count.