NH 802 then TW 250 at Narita
Singapore → Tokyo → Seoul
Timetable, Tokyo time
14:30NH 802 from Singapore at the gate
08:55TW 250 to Seoul leaves the gate
18 h 25 apart on the timetable, overnight
TW 250 leaves 18 h 25 after NH 802 arrives on the timetable: more than half a day, so not a connection we count.