[TUHS] Plan 9 from outer space ?

[Pierre DAVID]

There is a widespred anecdote that "Plan 9" name comes from the 
movie "Plan 9 From Outer Space".

Since I didn't find anything more than a reference to this 
anecdote (see https://en.wikipedia.org/wiki/Plan_9_from_Bell_Labs 
for example), I forced myself to watch the movie until the end 
(what a pain!).

Guess what? I couldn't find the link between the film and the 
beloved OS.

I'm sure there are people here who know more. Thanks in advance 
for sharing your knowledge with us.

Pierre