Are there any hidden references between grand theft auto and red dead redemption?

The only verified source supplied concerns Grand Theft Auto III, describing its development, setting, and gameplay, but it makes no mention of Red Dead Redemption or any intertextual references between the two series. Without additional documentation or statements from developers linking the two games, there is no basis to claim hidden references, Easter eggs, or shared characters. Therefore, based solely on the available information, we cannot confirm any such connections.