Board Thread:Warhammer 40k General Discussion/@comment-14745711-20130906234048/@comment-26165786-20150503171920

True, it would be cool. But remember, Watchers WHISPER!

And to clarify, if you read Legion (a treasure trove of Heresy fluff) there is actually a part when the Cabal mention their attempt at working with the First Legion, and that they succeeded only in finding beings with a much deeper connection to them than they had even known.