If I put together a trip all comprising of one-way Flying Blue award tickets will a TWOV be possible or must the tickets with a China stay be a continuous ticket but with a multi-day duration between flights (I'm a UK citizen/passport holder)? This is the itinery I'm considering flying with Vietnam Airlines and China Eastern:

London - Hanoi or Ho Chi Minh City (HCMC)
Change flight
HCMC or Hanoi - Shanghai
Few days holiday in Shanghai
Shanghai - Osaka
A week of so holiday in Oaska and Tokyo
Tokyo - Hanoi or HCMC
Change flight
Hanoi or HCMC - London

Flying Blue award tickets are much cheaper with Vietnam Airlines than with Air France or KLM, even though Vietnam is a bit of detour.

I'm thinking that a series of one-way ticket might not be accepted to qualify for a TWOV. Thanks