Khronos is only responsible for OpenGL since 2006 (essentially 3.0), DirectX 8 came out in 2000. In the relevant timeframe for the OP, the ARB was responsible, which has nothing to do with Vulkan.
>>filmor+(OP)
Around the Long Peaks debacle ARB became Khronos, it was basically a renaming, most of the people stayed the same.
It has everything to do with Vulkan, givent that the same organisation is handling it, and had it not been for AMD's Mantle, they would probably be discussing what OpenGL vNext should look like.