Neither you or anyone else that I've seen have provided any evidence that the same connection is re-used. Imagine this scenario: 1. User visits a site in norm

Neither you or anyone else that I've seen have provided any evidence that the same connection is re-used. Imagine this scenario: 1. User visits a site in normal mode. Browser opens connection A. Browser uses connection A to fetch the site. Browser leaves connection A open. 2. User opens private mode. User visits the same site. Browser opens connection B to fetch the site. How does it matter that connection A was left open if some other connection was used to fetch the site in private mode? If that's not the case, then its a big deal - but that requires some sort of evidence and not just wild hand waving that it could be the case.