I'm not sure the analogy holds. When you hire engineering contractors, you typically pay them for the work. You don't get them to a pitch a fix on a whiteboard,

I'm not sure the analogy holds. When you hire engineering contractors, you typically pay them for the work. You don't get them to a pitch a fix on a whiteboard, tell them "no we don't like that, we won't proceed with you and you can leave now" and then have your own people do that fix. Which is my reading of what's alleged here.