this sounds correct, and is exactly what I did. LLC B gets the K1 from LLC A and lists it on their return. the end client, indivudual investor person that is the man behind the curtain, then puts K1 from LLC B on his return. sure, easy peasy. I already knew all this and this is how the returns were filed. 

You still have not answered what I do with LLC A??? You unequivocally stated that LLC A must file a return, but have not stated HOW I file the return, so I am still at square 1.