VU 311 then TG 660 at Bangkok
Ho Chi Minh City → Bangkok → Tokyo Haneda
Timetable, Bangkok time
15:25VU 311 from Ho Chi Minh City at the gate
14:25TG 660 to Tokyo Haneda leaves the gate
23 h apart on the timetable, overnight
TG 660 leaves 23 h after VU 311 arrives on the timetable: more than half a day, so not a connection we count.