Originally Posted by Giggleswick

An Italian friend kindly showed me that you can find the Regionale schedules, though not the fares, by using the Deutsche Bahn site, http://www.bahn.de (or http://www.bahn.com). It allows you to uncheck "Prefer Fast Connections" and check "Local Transport," and that will yield Regionale routes. Or you can customize further using "Further Search Options." (The checkbox for Regionali is "NV," I guess for NonVelocita.) On Trenitalia, I haven't been able to see even Regionale schedules on routes dominated by highspeeds.

A little OT: My friend told me she uses the DB site a lot because for some of her journeys that include changing from branch lines it shows routes that are actually faster, though longer in KMs, than Trenitalia does.