Just to be 100% clear, are you saying that there is only one pat-down that can be performed by TSOs and one (the "very very rare" one) that can only be done in private and not by a TSO or are you saying that there are two pat-downs that can be done by TSOs and one additional?

It sounds like you're saying the former, but I thought the situation was the latter, that there were still different pat-downs in the more routine alarm and non-alarm cases.

From what I'm reading, I don't think there is a procedure known internally as an "enhanced pat-down". I think that's a PR thing: they're saying that they "enhance the pat-downs" and some started calling it an "enhanced pat-down" even though there's no procedure by that name.