Question and Rorschach

Rorschach was based on the Question. But then in the 80s, the Question reads Watchmen and sees Rorschach. Two things, one, why doesn't the universe implode from that meta-loop, and two, what if other Charlton characters or DC figures (such as Superman) were reading their parent company's other publications and imprints? (I envision Animal Man reading his own comics reading is own comics ad infinitum.)