I've seen the movie several times. In Italian, the title was translated simply as Mato Grosso, which makes it oddly geographically specific. ¯\_(ツ)_/¯
Connery definitely starred in even weirder movies. Have you seen Zardoz?
https://www.imdb.com/title/tt0070948/
https://m.media-amazon.com/images/M/MV5BNmI2NjI2OWYtMzU5NS00...