User blog comment:Omega natsu2/Chapter 369: The Place Prayers Reach, Predictions./@comment-2214433-20140129011112

I just want to note that while Mangastream's line of Silver "Natsu, out of all people" implies that he has met him, Crunchy makes it a little more vague, after Lisanna utters Natsu's name, Silver goes "Natsu... no, it can't be", which, in my opinion, can mean that Silver only heard of Natsu, not necessarily that he has met him.