Congrats to Sly for creating the 2 longest running narratives in film history. Rocky and Rambo. Narrative meaning one continuous story with the same actor playing the same character and the same story continuing from one film to the next. While James Bond and Star Wars have gone on a long time, they cetainly are not continuous narratives, they do not follow one continuous story nor have the same characters. The Rocky narrative is now 43 years long(1976-counting). Each movie a continuation of the last, and Rambo about 38 years, same character, new stage of the story.
MONUMENTAL achievement. These constant narratives have to adjust for cultural, political and popular culture changes over decades and still stay relevant. Public at large willing to sit through 40+ year long movies(with minor year breaks). Film history will remember and this will never be duplicated.