title: Why does Chrome use Http/1.1 instead of H2 for some resources
body: <p>We are in the process of enabling H2 for our web-site. During the testing I am observing that some resources seem to be requested with Http /1.1 and most of the others with H2. Interestingly the same resource, when requested via one path seem to be using http/1.1 and at another point seems to be using H2.</p>
  
  <ul>
  <li>I am using Chrome version 58.0.3029.96 (64-bit) running on OSX Sierra, running in Incognito mode</li>
  <li>Both the resources are requested from the same origin.</li>
  </ul>
  
  <p>See below the screenshot from Chrome developer tools for the resources.</p>
  
  <p><a href="https://i.stack.imgur.com/slnNJ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/slnNJ.png" alt="enter image description here"></a></p>
  
  <p>In addition there are few other resources that are also requested using http/1.1. Any ideas as to why this is happening ? Also when switching from http/2 to http/1.1 the same connection seems to be reused, could this also be causing a head of line blocking issue as well ?</p>
  
  <p><a href="https://i.stack.imgur.com/NIVgw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/NIVgw.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/2PLxY.png" rel="noreferrer"><img src="https://i.stack.imgur.com/2PLxY.png" alt="enter image description here"></a></p>
  
  <p>Any help here would be appreciated !!</p>