Explore the intersection of React Query and authentication in this conference talk from React Advanced London. Delve into the responsibilities and overlaps between React Query's server state management and authentication processes. Learn how to effectively separate concerns and implement a robust data flow using custom hooks for both authentication and React Query. Discover strategies for managing authentication status and user profile updates while maintaining a clear separation of responsibilities. Gain insights into centralizing user data management, handling mutations, and optimizing startup processes. Examine the implementation of useUser hook and its role in streamlining data updates. Investigate the current landscape of React Query Auth and React Query Firebase, and understand their evolving positions in the React ecosystem.