Is there a shared progression system between gta story and online modes?

The verified evidence from Wikipedia focuses solely on Grand Theft Auto V's single-player story mode, describing its 2013 release, developers, setting in San Andreas, and the three protagonists. It does not reference GTA Online or any mechanics linking single-player progression to online mode systems. Without explicit information about how these modes interact, no conclusion can be drawn about shared progression. The evidence is limited to the single-player narrative and open-world exploration aspects of the game.