Thread:Project:Support desk/mixed wiki-Site/reply

It sounds like you should look for a consultant (I'm one, but not available).

That said, it isn't clear what you need. It sounds like you want your internal wiki site to display pages from the external wiki site with added information. For this, I would suggest loading the external site via Javascript and displaying it along side the internal wiki.

Or, you could add JS so that when someone inside the company network who has access to the internal wiki is looking at the external wiki, they'll see a section of the page or a frame that contains the notes from the internal wiki.