At least a 4 hour drive with traffic delays possibly 5.
2 hours is optimistic and potentially dangerous. Some of the road is through a mountain pass with a lot of tight curves with no shoulder and it's a narrow 2 lane. There are many scenic pullouts where you may want to stop and take pictures. In the winter, icy roads can be an issue. In the summer there is road construction/repair and slow moving motorhomes. With no stops for fun or rest you can do it in 3 to 3.5 hours. Watch out of potential moose or caribou on the road.
Don't remember. But with the coach seems eternal. Never take a coach again.
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