I don't really get it, but I'm also not using chrome, but looking at the website's source instead.

- Does the website actually do anything related to SXG?

- Would this also work if I search something completely different, goo offline and then just click on the first result?

- What is the point of the code if it's just hardcoded?

- What is the random progressbar doing? Just for visuals?

Edit: I explored a bit more and this blog post[0] by the OP would probably be a better entry-point for this post.

[0]: https://www.pawelpokrywka.com/p/stretching-google-prefetchin...