Dazed and confused.
Join Date: Jul 2008
Location: Dublin, Ireland
There is talk in The Emperor's Legion of the Emperor communing with the Custodes through their dreams, and that when one of them declares they have received a message, their brothers take them at their word.
Also, in Dark Imperium there's mention of the SWs not embracing the Primaris, with most of them going to found successor chapters rather than join up with the SWs themselves.