A strange coincidence or something more?

A neighbor of mine works for an entertainment company and for a time worked with AI. A couple of weeks ago I asked her if she would talk to me so I could get a better understanding of its applications in the industry. When I asked her, we were outdoors and I did not have my phone with me. Several days later a book was delivered by Amazon. I was on my way out and uncharacteristically took the book out without bothering to look at the label or checking to see if there was anything inside. Lately I've ordered a lot of books and just assumed it was one of them. I threw the envelope in the trash.

The book was about AI. I've been researching it recently so it didn't occur to me at first that I had not ordered it. A quick check with my Amazon account confirmed it. Where had the book come from? Had my neighbor ordered it for me anonymously? That seemed unlikely, so I called Amazon. I couldn't give them tracking information because I'd thrown the envelope out, but they did confirm that the book had not been meant for me. However, I was told to keep it or give it away and they would send another copy to the party who ordered the book. I told them if they gave me the addressee I would deliver the book myself but their confidentiality policy prevented them from revealing that information.

This has never happened to me in all the years I've ordered things from Amazon--either that I've opened a package without looking at the label, or received a package that was not meant for me. I'm no statistician, but I'd like to know what the chances are that I would randomly receive a book about a subject I was actively researching that I did not order--especially about AI. Oh, and by the way, my neighbor confirmed that she did not send it to me. It does make you wonder.