Well, you consider a "bank" as a group of cylinders in-line... which is why even if the cylinders are in the same block casting, the VR6 is still considered a V6. Two banks. It's just that then angle between the banks is narrow enough that you can put both in the same block.
The Veyron has four camshafts... and it's not a joke, it has four banks of cylinders, so it really is, essentially, two V8s fused at the crank.