Why is loader not fetch at the same time as the lazy load?

I've split my routes like this:

src/routes/category/$.tsx

src/routes/category/$.tsx

-> has the loader and validateSearch

src/routes/category/$.lazy.tsx

src/routes/category/$.lazy.tsx

-> only the component
When I hover over a link to a category page, I see this in the network tab (check the image).

It looks like the lazy-loaded content is fetched first, and then, once that's done, it fetches the loader resources. My question is: since I have my loader in the non-lazy route, shouldn't TanStack Router start fetching those resources right away? Am I missing a setting to make that happen? Thanks!