JL 57 then TW 250 at Narita
San Francisco → Tokyo → Seoul
Timetable, Tokyo time
16:00JL 57 from San Francisco at the gate
08:55TW 250 to Seoul leaves the gate
16 h 55 apart on the timetable, overnight
TW 250 leaves 16 h 55 after JL 57 arrives on the timetable: more than half a day, so not a connection we count.