Has anyone ridden the bus from Rovinj to Venice? The map on Bus Croatia shows the longest stop being 10 minutes in Trieste. Does the bus have a restroom or do they make restroom stops they do not show on the map. It is a 4.5 hour bus ride.
I'd say that they're not being very precise about their arrival and departure times. They list them, but the bus is not likely to both arrive and depart each other stop within the same minute, when you have passengers boarding at some and border controls at others. I believe the bus driver is legally required to take a short break, and maybe that 10 minutes at Trieste will really stretch to 15.
I can't speak to this particular route, but I took the bus from Split to Zagreb which is a 5 hour trip. After a couple hours or so, the bus driver pulled off which gave us time to stretch our legs and use the bathroom. There was a small bathroom on the bus, but no one used it during the trip.