For decades, the rivalry between Sylvester Stallone and Arnold Schwarzenegger was the defining competition in Hollywood action cinema.

TMZ Presents: Arnold & Sly: Rivals, Friends, Icons is a 44-minute sit-down hosted by Harvey Levin in which the two men discuss, for the first time on camera together, how a ferocious professional rivalry became one of Hollywood’s most durable friendships.

The documentary covers the full arc: the box office battles of the 1980s, the deliberate one-upmanship, the stories neither has told in full before. Sly reveals how he came close to tanking Rocky II after a serious on-set injury, and how pushing through that kind of pain was simply what people like him and Arnold did to stay at the top. Arnold, for his part, tells the story of how he manoeuvred Sly into starring in Stop! Or My Mom Will Shoot — a film Arnold already knew was going to be a disaster.

The two also give their picks for the Mount Rushmore of action heroes, which is worth watching for that alone.