I'm almost certain that Pound never saw any Brakhage film.   I'm pretty sure
I asked Stan about that around 1977.
Brakhage himself didn't make it much to Europe, and his films played only in
the most underground theatres.
Pound, very unBrakhage-like, had an appreciation for Disney.
The principal medium for any Pound/Brakhage connection would have been Guy
Davenport.   You might ask him.   If it happened, he'd know.
Jay Anania