Are there any cross content features between gta v story mode and gta online?

Current publicly available information does not document any direct cross‑content elements shared between the single‑player storyline of Grand Theft Auto V and the multiplayer component, Grand Theft Auto Online. While both games share the same base world and many visual assets, no specific missions, side‑quests, or narrative items have been verified to transition between the two modes. Developers have occasionally updated game content in parallel, but those updates typically affect each mode separately. If future patches or announcements introduce overlapping features, those would be documented on official Rockstar channels.

Because the question asks for a definitive answer and no reliable source confirms such cross content, it is safest to state that, as of now, no confirmed cross‑content features exist between the story mode and GTA Online.