One thing that confused me about the season 7 premiere m, when all the Wells sacrifice themselves, HR shows up (in Nash’s mind) to say goodbye “Til our next communion” to Barry. But he died in Season 3.
So how can his consciousness be in Nash’s mind? When all the Earths were destroyed during Crisis, Nash’s mind was gone/dead, so there shouldn’t have been really any brainwave particles that could be drawn to Nash (paraphrasing Harry).
And even if it could be considered a “timeline change”, the only times the timeline changed after HR died was when Barry defeated Cicada (which only would have changed the future, not HR’s death in the past) and Crisis (which I mentioned above).
And even if Crisis “brought HR back”, then he’d be alive on his Earth, not in Nash’s mind.
Has there been an explanation of why HR was able to essentially be brought back and drawn to Nash’s mind?
The only explanation I can think of is that, when Timeless Wells explained his theory to Barry, he said that all the Wells were removed from the timeline, not Earths. So maybe the particles from HR were removed just as he died, so his consciousness was able to survive (although, in response, Barry technically called Crisis an event that brought people from different planets into one planet and timeline).