Board Thread:General Discussion/@comment-38940800-20200602000740/@comment-29927487-20200602013315

My guess is either there is some space-bending tunnel that SIU never mentioned which connects both floors or he messed up and it was a typo. I'm leaning toward the latter answer as the first one makes no scene. The Nest being on the 50th Floor seems the most consistent since it was stated multiple times throughout the story and the 55th Floor was only mentioned once.