Importing Multiple HTML files into Apple Notes

I have few thousand notes in Notion, but I would like to move them to Apple Notes. Notion allows for exporting the Notes as HTML. When I import them using an iPad, I can do it only one by one. Plus, the HTML file gets attached to a Note. Furthermore, Apple notes app does not index the content of the HTML attachment file like it does for PDFs and other text files.

I would like to know what the behavior is on a macOS. If I select multiple HTML files and import them to Apple Notes, do they all get attached to a single Note? Do they create a like for like Notes as a true Import should work? Any answer is appreciated.