NH 2178 then TW 250 at Narita
Osaka Itami → Tokyo → Seoul
Timetable, Tokyo time
15:30NH 2178 from Osaka Itami at the gate
08:55TW 250 to Seoul leaves the gate
17 h 25 apart on the timetable, overnight
TW 250 leaves 17 h 25 after NH 2178 arrives on the timetable: more than half a day, so not a connection we count.