Google’s John Mueller said on Twitter that you cannot force a HTTP/2 crawl for your website. There is also no ranking advantage if Google’s crawls your website that way.
AFAIK we don't manually pick sites for trials like that, it's more about whether it's possible & makes sense for crawling. There's no ranking advantage.— 🍌 John 🍌 (@JohnMu) November 19, 2020
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