The horrible American dub is closer than the subtitles:
angel forms lay entranced, thick as autumnal leaves
nine days they fell, confounded chaos roared
#GitS #GhostInTheShell 2 Innocence
I don't think Ronan Harris was inspired or influenced by Innocence when he wrote Darkangel. It's just that the song uses the imagery of a fallen angel, and because that is largely what Milton's Paradise Lost is about, there is this link with the Ghost in the Shell movie.
The shape of the airplane's wings and the cathedral-like buildings on Etorofu reinforce the reference.
After all, Togusa is quoting from Paradise Lost to express his reaction to the scene they are confronted with. And the makers of the movie have him do this because they want us to realise this connection.