The comment on the 301 redirection is interesting. A 302 redirection would imply that the original URL should be maintained since the redirection to another UR

The comment on the 301 redirection is interesting. A 302 redirection would imply that the original URL should be maintained since the redirection to another URL is temporary and will be reversed. In this case, the next redirection when it comes along will be to yet another URL. Provided this process is maintained, what we have is a series of permanent redirections with never a reversion to a prior URL.