JL 8122 then VN 307 at Narita
Tokyo → Tokyo → Ho Chi Minh City
Timetable, Tokyo time
16:15JL 8122 from Tokyo at the gate
09:30VN 307 to Ho Chi Minh City leaves the gate
17 h 15 apart on the timetable, overnight
VN 307 leaves 17 h 15 after JL 8122 arrives on the timetable: more than half a day, so not a connection we count.