Well, Phillipe must be doing something right, he is also praised for his other documentaries. I read some reviews on it, I found one review that touches on the Greek Furies as an allegory to Alien......
"And it expands on a theme that's often been talked about: that "Alien" was a subterranean feminist horror film — not just because Sigourney Weaver's Ripley turns into one of the most potent heroines in cinema, but because the movie, drawing on the Greek mythology of the Furies, conjures a symbolic nightmare fantasy of a man getting raped (by the face-hugger) and then, in the chest-bursting scene, giving birth."
Digging further since I don't know much about Greek Mythology, apparently the Furies were three goddesses of vengeance who punished men for crimes against the natural order.
So there's the connection....I guess....kinda....sorta.....if you squint your eyes. Apparently that's why we see three witches rising through Alien 79's illuminated blue mist.
I guess the next thing I need to dig for is WTF is a subterranean feminist horror film.