Yes I am doing this schematic. They are using 1nF/2kV capacitor for separate GND and CGND.I was thinking I don't need 1nF/2kV but now I will use it. I am doing same decoupling except I am not using 10uF/16V tantalum capacitor, I am using 10uF/25 or 10uF/50 ceramic capacitor.