It does seem to work... to some degree. It can save a Gemini session but it doesn't "see" it anymore when you try to load in a very long chat session. We're talking about way more than 40 pages long. I can load the session once and then save, but the chat get cut off. I'd have to scroll all the way up to the very start. Once I've done that, the addon can't see it anymore. :/ I ended up just saving the page as html instead.