[Lcn]

yeah it can't be from the past . I think it might be cuted scene from 26 /27 ep. after simon and others are awake from their "dreams" and before he appear near Nia in gurren-lagann.... only thing is.. the voices doesn't match e.g. boota human form voice in more matured . It might be from "future" but with who they were fighting? the rest of anti spirals it's doesn't make sense=P
Anyway this intro is Gainax like I think=p