I posted Export web articles into Obsidian before. I noticed that I can import Kindle Notes & Highlights with Glasp.
With Glasp’s Chrome extension being installed, I can select books to import into Glasp.
(Screenshot from their Twitter)
After that, when I go to my profile page, I can see imported notes & highlights.
(Screenshot from their Twitter)
On my profile page, there is an option to download the highlights & notes as an MD file (share button). So, I can directly download to Obsidian and see all the highlights & notes there. It has a link to the book on Amazon as well. It’s so convenient! Hope it helps