Continuity error with Rey and the saber.
https://i.redd.it/0eju4uoy3jy41.jpg
This is why I think cutting the back and forth with the saber, along with Rey’s line about earning it, makes sense. She’s been using the lightsaber for a movie and a half already, I never got why suddenly she had to earn it. If I remember correctly in the novelization she even toyed around with building her own saber while rebuilding Anakin’s, the fact that she settled on just using the rebuilt Skywalker saber implies it is her own saber she feels unworthy of, not the legacy one.