Question: how are conjuring 2 and the nun connected?
Answer: The Nun is a spin-off of The Conjuring 2, with the habit-wearing demon Valak (played by Bonnie Aarons) as the film's antagonist. In The Conjuring 2, Lorraine sees visions of the demonic entity, eventually coming face-to-face with the evil. The Nun reveals exactly how Lorraine became haunted by Valak in the first place.