The whole story is very confusing and we will probably never know. In another document, one officer contacts the registrar at U of O and finds BK was never enrolled there. Then, apparently, there may have been some other name he was using or something. At any rate, the person who gave this information said she was there, gave the prof's name, and said they were talking intensely about crime, and apparently the professor decided to gift Kohberger with a knife.
I've heard this story before, the prof's initials are given in the redacted documents and the person who was the eyewitness (supposedly) was talking about the incident on social media.
I was just very surprised to see that LE actually talked to this witness and put the story in the tip file.