User blog comment:B214/Question and Answers 6/@comment-24098614-20160826101830/@comment-24098614-20160826121023

This means that Vali's rematch with Issei will never happen if the gap of power is never reached because if Ddraig is the rival of Albion this match will never happen even though the rivalry has turned friendly it would be a mismatch of a fight now.