In my experience, a client might talk openness and mutual benefit in the beginning, but once the product is finished, the mindset changes, it becomes very invested, they want to control the product, the message, and (A) hide the resources that would allow competitors to benefit, (B) allow as few indications as possible to the world that the product did not come from inside their own organization.
So they go back to the NDA and say sorry. What do you say? Well you get to mumble two words to yourself, but not much else. You have to let the world find the award and the win on its own. I’ll google your name and award right now…