User blog comment:CNBA3/Luffy's Mother Theory!/@comment-4401815-20150326105257/@comment-5303512-20150326110202

Well, Dragon does help or support Luffy out from time to time, but yeah, they don't interact much. I bet at the end of the current arc Sabo will make contact with Dragon and Luffy would be his usual self and casually just talk to Dargon and everyone is going to make epic faces.

Though, I would like to think of Luffy's mother had anything to do with why Dragon wants to take down the World Government.