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No probs, I think it's a question of idiom...

keisari, no need to get to/from Treviso, unless you particularly fancy Ryanair - I wouldn't recommend it. If you do, there'll be a connecting bus.

The one-day train trip is possible - changing in Milan or Turin, but it's a long, 11-hour haul. Again, though, you could split it and have a couple of hours for lunch somewhere in the Alps.