Complex sentence: A 1976 feature film, "Buffalo Bill and the Indians, or Sitting Bull's History Lesson" by Robert Altman, gives deeply critical depiction of Cody and his Wild West show, with Cody portrayed as a lying buffoon who cannot separate fiction from reality.
Split into simpler sentences: A 1976 feature film, "Buffalo Bill and the Indians, or Sitting Bull's History Lesson" by director Robert Altman, critically portrays Cody and his Wild West show. Cody is shown as a lying buffoon who cannot separate fiction from reality.