I was at Maersk Data testing applications for Maersk Line, there were always several on the team who had a past on the other side, and often developers and managers who had been working with the area for at least ten years. And as the owner was the same there was also a common understanding that we should keep the boxes moving.
Sometimes you also need a project manager who can say: "no, we have not finished testing yet. Do you sign here to accept these unresolved issues plus what is found in production?
I had one!