Alfa Digital is a bootleg company. I think.
And as far as I know the Stranger films are owned by Allen Klein and he doesn't like to share. Although, it seems he's finally going to let US editions of Jodorowsky's films to be released.
The Stranger films double pack from Alfa Digital is apparently using recordings from Turner Classic Movies tv channel. Parts of the logo can be seen in the image in atleast one of the movies.