There was a LOT of disagreement with OC Pro and OC 2.0 about recoating. Back in those days, it was hard to get the same answer twice. At one time we were told you couldn't do a second layer because it wouldn't stick. Then it was, you can do a second layer, but it has to be done within a short time (hours) after the first layer. Then it was you can do a second layer, but it has to be before the coating fully dehydrates, which could be months.
Some of the confusion was because of differences between the Pro and 2.0 versions, some was running changes to the products, some was learning more about the product as time went on. The good news is, you can't get OC 2.0 anymore, and Gloss-Coat is a hybrid product which I understand can be topped at any time by any thing.
Oh, and as Ron alluded to, there was also some disagreement about whether multiple layers was needed...which was kind of the same round and round. Pro gave a thicker layer than 2.0, so wasn't that better? Well...yes...so you could do multiple coats of 2.0 to try and build it up thicker...but you don't need to do that. But if you don't need to do it why is one of the selling points of getting the Pro coating is that it has a thicker film build? Well, that's because it has a warranty. And around and around.
A lot of these discussions were lost from the forum when the member that was supplying a lot of this info left and took his posts with him.