The casual nature of that relationship is reflected in Valve's attitude about releasing the new mode -- Team Fortress 2's VR-enabling update in the coming weeks is essentially a giant beta test in which Valve will measure and analyze the way TF2 players interact with virtual reality hardware.
Despite delays on Tuesday and Wednesday, when it looked like there were too many cooks in the kitchen, today BP (and its government minders) fixed a leaky valve then moved on with their test of the containment cap.