It doesn’t sound too far-fetched, I stopped watching MCU stuff with Age of Ultron and have never seen a Star Wars movie. If you told me that the next big release (probably not the Marvels because nobody seems to care about that) ended with a Star Wars crossover tease I would absolutely believe you. And all that Spiderman stuff HAS happened as far as I know, just with figuratively jerking each other off rather than literally.