From what I recall, Animus works in the following way. 

X has an ***ancestor***, Y. X and Y share genetic material. X can access Y's memory through the Animus simulation. 

In *Assassin's Creed Valhalla*, near the endgame after the "Brother’s Keeper" mission, a certain person uses the Animus and simulates a memory of Eivor. 

How is that possible? The original user has genes common with Eivor, being his descendant, but the new user does not.

Question: Can you use the Animus to access memories of another person you are not descended from?