Board Thread:Anime/@comment-27321453-20181014183006/@comment-1327106-20181021180928

The details of this might have been cut from the anime, but Levi didn't mean the supplies for feeding everybody or weapons. If they were manually plugging Wall Maria (without Eren's hardening) they would need stone and lumber. Those are the supplies they would have had to drag all the way out to Wall Maria for the repair job. Not having to worry about that makes traveling faster.