I only have hints for you that you might be able to hack together for a solution.
During the page rendering, you have access to .Site.Pages, which is all of the pages for your site. You should be able to find the page you’re looking for using where and range. Each Page should have a .Content property that you can insert into the current page.
As far as I know, there’s no {{ getPage "note1.md" }} helper function available in templates to make this easy.