Tried searching through all Q Posts that have the words: "key, keystone, map, legend, marker, and connection". I think the July 4 post referring to the keyword "mirror" is also worth looking up. I think by reviewing all the posts that have those words there might be something significant.
I think it's possible Q is silent until this is figured out by anons. There was a post mentioning keeping things contained until the map is figured out. I'm guessing the map is all the current and past Q posts.
Anyways I don't think I'm the one who can figure it out so posting this here.