I think what's a bit strange here is

1) you would suspect KLM flights you book on there website are all within your flying blue status
2) VS joined the TATL JV
3) AF/KLM owns 31% of VS
4) VS joined the blue biz program

and yet no sign of VS joining Skyteam...
but most strange is KLM recently announced that you can earn miles & XP on some non-skyteam partners but no VS

So I think this should be clarified by KLM as a lot of routes I'm looking to book from AMS to the USA have a stopover in MAN or LHR with VS offered instead of CDG with AF or DTW/ATL with DL

my 2 cents