Tanstack Router docs are missing documentation present in Tanstack Start docs

Recently we switched from React Router v6 to TanStack Router for our React application. We were seeing some unexpected behavior around error boundaries, but looking through the Router documentation I couldn't find anything on it!

Then i found it here in the Start docs, and here deep in Data Loading in the Router documentation.

As a developer I sort of expect to see a top-level section in the docs around Error Handling, like in the Start documentation, or under the Routing section. Just wanted to give some feedback on it. Sorry if this is the wrong place for that.

Start by comparing the TanStack Start error-boundaries page with the Router documentation's Data Loading section on handling errors. Identify the Router documentation navigation or Routing section where error handling is expected, then make the error-boundary guidance discoverable there and verify the resulting links and wording in the docs site.