On a whim I decided to give NotebookLM the RSS feed to the essays (titled posts) to this site, and it ingested the feed and does answer questions I pose correctly. One problem though is that the source(s) it cites for responses is to the single, large, file, and not the specific location in the file, which tells me (obviously) that it doesn’t know the RSS XML format but it still handles the text within the feed.