
To start with, I'm not sure I'd have ever found this clue on my own, just happened to see it on YouTube on someone else's playthrough. They didn't know fully what it meant, neither did I.
At that point I already about 90+ hours of playtime(rough estimate without AFK time). Then after about 30+ hours more and occasionally spending some of that time trying to figure out what the clue meant I never figured it out. Until just now.
I'm curious whether I was just slow with this, or it's just that obscure of a clue. While this post is already marked as a minor spoiler, try keeping answers spoilers free or use spoiler tag(plus indicating of spoiler level if possible).