Redirection chain and Javascript Redirect

[LouisPortier]

Hi,

A redirection chain is usually defined as a page redirecting to another page which itself is another redirection.

URL1 ---(301/302)---> URL2 ---(301/302)---> URL3

But what about Javascript redirect? They seem to be a different beast:

URL1 ---(301/302)---> URL2 ---(200 then Javascript redirect)---> URL3

From what I know if the javascript redirect is instant Google counts it as a 301 permanent redirection, but I'm still not sure about if this counts as a redirection chain.

Most of the tools (such as moz) only see the first redirection.

So is that scenario a redirection chain or no?