So if the owner doesn’t want to add the sitemap in Search Console, so Googlebot will recognize the HTML sitemap and go from there?
JOHN MEULLER (Webmaster Analyst from Google):
Yeah. We use HTML sitemaps to understand the structure of the site to find the URLs. But there is obviously a lot more information in XML sitemaps, things like the change date, for example, that tell us that these pages actually changed, which, if you have a larger website, then letting us know that this section of your site or this specific detail page changed recently, it makes it a lot easier for us to crawl there and to actually update our index, based on that chang So that’s something you wouldn’t be able to do with an HTML sitemap. It’s almost like an HTML sitemap could be comparable to a normal site’s navigation. And if you already have a good site navigation, then you probably don’t need an HTML site map for search engines, at least.