There is a great relation between Loki’s final episode and Wanda Vision’s final episode.
Loki and Wanda Vision: If you have watched both the episodes then most
probably you would not have noticed such high details and if you have not
watched the final episodes of both these series then I want to tell you that
you should first watch those episodes as I am going to give you some
spoilers of these episodes.

Both the final episodes of Wanda Vision and Loki are synced
and they are synced so nicely that it is almost impossible to find out the
relation between these two, but if you try to watch both Wanda Vision’s
final episode and Loki’s final episode side by side, you will be able to see
the sync and from this sync and relation, we can infer that whatever
happens in the final episode of Wanda Vision is because of what happens
in the final episode of Loki. At exactly 27:55 when in Wanda Vision,
Wanda becomes a scarlet witch is the same time when he who remains tells

Loki that they have just crossed the threshold. (Loki and Wanda Vision)
And at 28:14 when he who remains drops something on the desk, the
same time Agatha Harkness hits the ground in Wanda Vision. It means
we can put forward a theory that Loki has actually created the ending of
Wanda Vision, let me explain this in some detail. There is a scene in
Loki’s final episode where multiple timelines get create which is a direct
hint at what happened in the ending of Wanda Vision when Wanda hears
the noise of her son crying and screaming for help. Her son had been created

by Agatha Harkness but was erase from reality. This might be an
indication that the two sons exist in some other timeline or in some
other reality.
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