The OP didn't say they were having Chef's Counter, just that they were going to Napa Rose for dinner, so it wouldn't necessarily be a 2 hour meal.
There are only two seatings whether you sit at the Chef's Counter or at one of the tables. Most of our dinners have been close to 2 hours from the time we are seated at our table to the moment we leave. This last time was actually longer but we were at the Chef's Counter. It doesn't have to be a 2 hour meal and they could could just have appetizers (scallops!!) and dessert.