title: Difference between HTTP pipeling and HTTP multiplexing with SPDY
body: <p>Thanks to Google and Stack Overflow, I think I understood the difference between regular HTTP pipelining and HTTP multiplexing (e.g., with SPDY), so I made the diagram below to show the differences between pipelining and multiplexing based on three regular HTTP requests.</p>
  
  <p><img src="https://i.stack.imgur.com/Zp2lf.png" alt="enter image description here"></p>
  
  <p>My two questions are:</p>
  
  <ol>
  <li>Is the image correct? </li>
  <li>Is it true that if pipelining would not have the <a href="http://en.wikipedia.org/wiki/Head-of-line_blocking" rel="noreferrer">head-of-line blocking problem</a> it would be as fast as HTTP multiplexing? Or did I miss an additional difference?</li>
  </ol>