I just watched What Is And What Should Never Be (2x20) again for timelining reasons.
I only popped it in because I realized I didn't have John and Mary's birthdates on my timeline, and I realized that I could easily get Mary's birthdate by combining the
grave stone in Children Shouldn't Play With Dead Things (2x04) with the date in WIAWSNB. Also, WIAWSNB has a gravestone for John. So, now my timeline is all nicely edited and correct.
Then I was surprised...
( Jared's A Good Actor! )Anyway, such a good episode.
Also, I noticed that both Wish!verse-Mary and Wish!verse-Sam tell Dean to "get some rest" at one point. It's a nice repetition that I missed before, but adds a nice little to the "something is not right" vibe.