I think it's more of a carry over from 1E, but Kindred dream when they are in torpor. This used to be used to explain "fog of the ages" in 1E, but that was nerfed for 2E if I remember correctly. However, per pg 105 of the 2E rulebook, "During her slumber, she experiences strange, nonsensical dreams that keep her mind active and exercised. Usually this means she's prepared to adapt to a new world. Sometimes this goes awry; she wakes up a whole new person, or rarely with distorted memories of her past existence." I'm basically using staking as a form of torpor, which allows for the dramatic dreaming I'm going to include for you in my upcoming IC post, but also is a valid interpretation from the book (also page 105).