Less than two months after this TV movie's airing would be the US release of Les Évadés de la planète des singes (1971), with two castmates from this film Kim Hunter and Sal Mineo respectively playing Dr. ZIra and Dr. Milo, two of the three talking simian astronauts who escape to modern USA from Earth's future, the third member of course being Dr. Cornelius played by Roddy McDowall.