Isn't that what the browser does by default if you don't involve any websockets or JS? When you load a page it streams (and incrementally parses and loads) the

Isn't that what the browser does by default if you don't involve any websockets or JS? When you load a page it streams (and incrementally parses and loads) the content for that page. When you follow a link to a different page on the site, it streams the content for that page and only that page.