Has rockstar games ever referenced red dead redemption in a grand theft auto gam?

Current publicly available information does not document any direct references, Easter‑egg connections, or crossover elements linking Red Dead Redemption to the Grand Theft Auto series. While both franchises are developed by Rockstar Games and share similar thematic and stylistic elements, no official statements, in‑game references, or credible reports confirm a deliberate reference from one to the other. Consequently, without verifiable evidence, the existence of such a reference remains unsubstantiated.