Yes, precisely. I’m not so fussed about a buried O.HG or O.G, as I am about a R.HG or R.G. that’s got prominent mottling. These are much more common than a fully developed gleysol, that’s been buried (I don’t think I’ve ever seen anything like that).
I’m always up for a challenge, and a rabbit-hole to go down. I’ll do some digging, and see what I can find, and if there is a logical flow for these calls between CSSC, the 82 manual (if needed), and the 2011 special issue.