I'm going with 2-
With Naruto/Sasuke Hagoromo does this whole "Put out your dominate arm" and you see them place their palms on his for the transfer.
Manga
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Anime at 2:20
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With Hinata-
at 42:54
Random main branch Otsutsuki clan member corpse says "The Byakugan. I sense the Byakugan" and proceeds to spit out an orb that flashes and causes Hinata to pass out.
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at 01:00:45
Later we learn that she was shown a vision of Tenseigan and Hamura comes and tells her not to let the world his brother created be destroyed...Vision end.
Problem is that as far I remember Hinata didn't use her chakra visibly in the movie before this...so we can't tell if the color went through a change or Sp were just being accurate to canon since her chakra was already supposed to be purple.
For her move...we don't know if that is just a skill she developed over the 2 year time-skip.
And for a person who received a power boost from Hagoromo's brother...she didn't really show vast improvement.