Hi,
Thanks so much for the reply.
1. Unfortunately did not work. To test it, I have three PDFs–only one is attached to a post in the desired category, one is attached to a post in another category, and the last is unattached. All three still show up in search.
2. This partially worked. The results page now shows the snippet, but it still links directly to the PDF and not to the parent post.
3. Good to hear.
Thank you!