I have changed the information on BZ tickets as it was incorrect - with a season and a single the train does not have to stop at, only pass, the changeover point. A BZ ticket will usually be more expensive as it is more flexible, allowing you to use any route from the edge of your zones

This is also true (but counterintuitive) for a season and several connecting singles, though you will generally have a fight on your hands if you try to do this

If you have multiple season tickets the train must stop at the changeover point between them