OD 572 then MH 520 at Kuala Lumpur
Hanoi → Kuala Lumpur → Changsha
Timetable, Kuala Lumpur time
20:10OD 572 from Hanoi at the gate
19:50MH 520 to Changsha leaves the gate
23 h 40 apart on the timetable, overnight
MH 520 leaves 23 h 40 after OD 572 arrives on the timetable: more than half a day, so not a connection we count.