let two observers in different locations see the same event simultaneously [...] So ... what if observer B does nothing while observer A (a long, long ways dis

let two observers in different locations see the same event simultaneously [...] So ... what if observer B does nothing while observer A (a long, long ways distant) measures something. Can B then "see" the corresponding wave function collapse, thereby knowing that A took a measurement? What I'm working towards here is not caring about the measurement outcome, but rather knowing that a measurement took place, and using that as "information". If you have enough entangled quanta don't you then have a primitive serial line? It should be obvious here that I'm not very familiar with QM. Just wondering.