There are two SharePoint sites, each based on its own SharePoint installation.
Both are in the same domain.
The first site is for a document flow.
The second site is for a knowledge base.
I need to put a set of web parts (search, search results, indexed document library) from the second site in the master page of the first site.
The services and data will stay on the second site but they would be available in the first site.
I tried to apply the Page Viewer Web Part but it’s impossible to avoid using the second site’s master page layout.
Question
What other ways exist to solve this task?