Getting PR internally and externally

Is the formula the same?

[DerekH]

In an idle moment pondering on the sudden improvement in placement of the home page of one of my sites, I remembered that it is a split site, split across two different URL families, sitting on two different ISPs.
No - don't ask why - it's a historical thing!

It's all done seamlessly - as the visitor burrows down, he's moved to another ISP.
It means that pages near the top of the site have links to the second ISP as well as the first, and similarly for the deep-down pages.
In particular, there's a link to the Home Page from every page on the site, irrespective of which ISP hosts that page.

So here's a simple question ...
"Is there any reason to believe that the distribution of PR around the whole site (and in particular, back to the home page), would be any different if I moved all the pages onto one ISP?"

It hasn't attracted any cross-linking penalties, and neither should it, because it's one site, not two incestuous ones.

I look forward to some contradictory answers <grin>
DerekH

[doc_z]

Is there any reason to believe that the distribution of PR around the whole site (and in particular, back to the home page), would be any different if I moved all the pages onto one ISP?

So far I haven't seen a hint that there is a difference between internal and external links for PR. Also, to distinguish between internal and external links would be in disagreement with the concept of PageRank (because it's based on the structure of pages).

However, there might be a difference in the weight of anchor anchor text.