Este parece ser um caso da cauda abanando o cachorro. JKR queria ter espaço suficiente para contar uma longa história, que, em sua mente, abarca 5 filmes e corre por quase 20 anos , levando ao duelo icônico de Dumbledore com Grindlewald em 1945. Sendo esse o caso, 1945-1919 = <1926>
Originally, to tell you the truth, we said a trilogy as a placeholder. We wanted to be honest with people that it was going to be one movie, but we were feeling our way. And then there came a point in the drafting of the story where I said to David, 'This feels like five movies.' And I'm feeling pretty certain about that. It's ambitious to tell it in five because we're spanning 19 years. But I can see an arc. So, that's how it happened, it came out of the material.
J.K. Rowling Confirmed The Timeline Of Fantastic Beasts, And This Could Be Huge