Originally Posted by
Shadochi
1) Why would all the stories of the expansion need to combine?
2) The stories did influence one another, we don't need blizzard to write out every little detail for us to notice it. N'Zoth obviously used the faction war to get released, the faction war was what helped him lure us to bring him Azerite and release him, otherwise he would've been trapped there for much longer. But he didn't have influence (as far as we know) in starting the war, he just reaped the benefits of it and saw his chance to escape.
Still doesn't change the fact that Legion had 1 central theme while BfA has 2 (even if they are connected, still different themes).
Also, the pillars were collected for the purpose of stopping the legion, and while collecting them most of the time we also dealt with the legion.