Hello, I'm planning on purchasing train tickets via SBB from Zermatt to Bolzano (by way of Brig). Since this is an international trip, do the tickets purchased through the site transfer for the Italian trains? Or do we also need to book via Trenitalia? The time tables through SBB are much more favorable than what's showing up on Trenitalia, so I just want to be certain before we book.
We are planning to do the Swiss Travel Pass, too.
Thanks!