generally speaking animation pilots are an "episode 0" that is shown to investors/platforms/networks/hungry fans on youtube/etc as a proof of concept for getting something more substantial made for real, and often are substantially different from the series proper (though given this is an adaptation thats also trying to adapt a Style I don't think thats too much of a concern in this case vs like Steven Universe as a random off the dome example). which is to say. they are probably gonna retread ground for ep1