It's not entirely unrelated. From what I have read on the DC Cinematic reddit the plan is that the snyder cut can just be shown on HBO and it won't cost warner bros anything (not sure on the logic of this) and from there it can be a massive success and warner bros will see the error of their ways and welcome back zack so he can complete his vision which will be the greatest film anthology of all time which will make all the marvel fans jealous.