Now I know Prometheus is a Alien prequel isn't supposed to connect to the Predator vs Alien verse. Some things are contradictory such as Engineers being Human Precursors that has imprinted itself to ancient cultures and the Predators being ancient astronauts that taught humans how to build pyramids. Xenomorphs being one of the many bio weapons Engineers created. Xenomorphs being a prized hunted animal for young Predators. When things go bad Preds nuke the hunting ground. Most Engineers we've seen want to kill humanity. Assuming these Predators and Engineers know each other how would you characterize their relationship?