What did you want to know about it? Yes that would be the order to apply them. Yes you will likely notice a change in looks as compared to using just one or the other. I have no idea how longevity will be impacted. From what I've read there is/was a fair bit of carrier solvent in the Collinite (old formula, not sure about recent one), so that may affect how well it layers. (Strong solvents may remove previous layers, even if you were layering it on itself, so you may not be much farther ahead by layering the Collinite. Only way to find out would be to try it.)
I would say you should contact the guys at Collinite about their product. From what I've seen, they know their product well. They should know better how much impact on other products their products might have.