https://byustudies.BYU.edu/article/the- ... l-witness/some Saints specifically state that as Brigham Young addressed the congregation he sounded and appeared remarkably like Joseph Smith, others simply say that the “mantle of Joseph” or “of the prophets” rested on Brigham Young, and others state that they were given a witness “by the spirit” that Brigham was to lead the Church.
So it sounds as if things got more miraculous the more time passed - just like the First Vision accounts.