Aha, correct. Loaded up the website that appeared downgraded, it&#x27;s still HTTP&#x2F;2 in the incognito window, and chrome:&#x2F;&#x2F;net-internals&#x2F;#http2 does confirm that it is in-fact real HTTP&#x2F;2 (not the extension being odd).<p>Why would this behaviour happen? I don&#x27;t understand why it does the initial session in HTTP&#x2F;2 but then drops to SPDY upon further requests