Board Thread:Spoilers!/@comment-9241531-20150811165057/@comment-26175319-20151013050520

Obviously Arthur wasn't aware of the DO's dagger being the tip of Excalibur when he pulled it from the stone, he did learn that during his new quest though. I hope we'll see how Arthur learned/figured that out. Now whether he was aware or not that his visitors had the DO's dagger with them will be interesting. My guess is that he suspected they could help/lead him to the dagger but eventually find out they had it with them.