some questions about waterfall view

Web Performance Discuss Test Results
1

This is my result http://www.webpagetest.org/result/130823_CP_5Q3/1/details/

I have some questions about the waterfall view,

  1. why the time of the first request does’t match the time scale?
  2. why there has some blank between the connect and fftb of the forth request?

When i put the har result in the HTTP Archive Viewer 2.0.17
the waterfall result is a bit different with yours.