Board Thread:Manga/@comment-34196931-20190808205129/@comment-1327106-20190809054031

SunWarriorAsahi wrote: Would these two have entered this other dimension regardless of their physical state in the real world?

Zeke believes that members of the royal family would go to that other dimension (paths, the coordinate, whatever you want to call it) whenever they used the Founding Titan's power. Assuming Zeke's suspicions are true, then the two of them would go there regardless of whether Eren was decapitated as long as they were trying to use the Founding Titan.

Eren being decapitated might still make a difference when they leave, unless Zeke is capable of fixing him, but as far as going to the other dimension, Gabi's shot didn't change the outcome. They still made contact and Eren wasn't brain dead yet, which was just enough.