GK 7300 then JL 759 at Narita
Fukuoka → Tokyo → Ho Chi Minh City
Timetable, Tokyo time
20:35GK 7300 from Fukuoka at the gate
17:45JL 759 to Ho Chi Minh City leaves the gate
21 h 10 apart on the timetable, overnight
JL 759 leaves 21 h 10 after GK 7300 arrives on the timetable: more than half a day, so not a connection we count.