In the final part of "Crisis on Infinite Earths", in the beginning of the episode, when Barry and Kara first found out that
nobody remembered the multiverse
when the guy asked for an autograph, he mentioned that Barry and Kara were usually accompanied by
and a couple of Legends.
My question is this; how did the guy know about
Was it a different Green Arrow (not Oliver Queen, maybe Mia?). From my understanding, Oliver sacrificed himself to create the new universe, so he would never have existed in the new one, so the guy wouldn't know him.