Not sure if this is posted in the right spot but here goes. The similarity between the crew compartment on both planes is notable. I have heard they are the same and also that they are not. I have been let to believe that components for both planes were at times assembled in the same factory and to save time the same jigs were used for both planes. This doesn't make sense to me as both companies would have been in competition with each other for the ultimate contract. Is it possible that one just copied the others design ?