User blog comment:Darkcloud1111/It's All Connected/@comment-1515612-20111010135500/@comment-3146930-20111010141429

exactly. Piper is good friends with Leo, Leo's relative was friends with Hazel, Hazel is (possibly) dating Frank, Frank's ancestor is a son of Poseidon making Frank and Percy related, Percy is dating Annabeth, and Jason is related to Thalia who is Annabeth's best friend