Well, infinitum, while it may seem the same they are esentially different. Mahozpku is to use spells the spirit HAD in their legend or story, while what ERode has here is the conceptualization of some part of the spirit's story into magic.
Baldman, well, I did say that it is most likely an almost impossible achievement, so I'm figuring ERode will introduce this as a technique for a sub-clan or something, anyways, what I am trying to say is that no others may be able to use the Concept Connection unless ERode teaches them. :P