This is exactly how most watches were designed during the mid-century period. Genta, Albert, Richard Arbib, and others worked almost exclusively on a project basis. And while JLC did not "style" the Ervin Piquerez-engineered Super Compressor case itself, the dial of each Compressor watch was proposed by its parent firm, not the case-patent holder. The Vulcain Nautical, for example, is very different from the Polaris in dial calibrations, color, and detail - every way, really.