What happened to all the Titans roaming outside the walls when the Survey Corps left the wall and arrived at the ocean? I mean, surely they couldn't not have disappeared into thin air now (Like the Colossal Titan), right? Surely the Survey Corps would have encountered vast amounts of Titans as always when venturing outside the walls.
I know for a fact that the Survey Corps did not install Titan guillotines all over Wall Maria, like it was used in Trost District.
I distinctly remember in one of the chapters, it mentioned that the Survey Corps went along beaten Titan trails outside of the walls, and encountering little to no Titan Resistance. How is this possible? Am I missing something from the Manga/Anime?