roscopervis- Could well be that, for the reasons you mentioned, the JetSeal and HCW simply aren`t compatible (at least in that sequence).
FWIW, I did (uhm..of course..) properly/objectively compare the durability of my LSPs on bare paint vs. on top of [my penultimate products] to verify there was no discernible difference (sorry if I`m stating the obvious, dunno how familiar you are with my approaches to things..).
I usually prefer using an AIO or a leaves-stuff-behind Finishing Polish before my LSPs. I find them very user-friendly and the appearance never suffers as compared to using other Finishing Polishes/etc. It`s *VERY* rare that I require the cut of even something like M205.HD Polish or even 1Z High Gloss, so using something much milder like the old 1Z Pro MetallicPolish or WaxPolishSoft is a quick/easy..i.e., utterly foolproof way to prep for LSP. And it saves me from having to strip Polishing Oils, which I find more bothersome than many do.
Not that I do *anything* except wash/reLSP 99% of the time. I go years without touching a polisher and am utterly disappointed if I have to get one out as it indicates some kind of FAIL, generally on my part
IF a vehicle requires correction I might approach it differently (not like I`m locked into any single approach), but that`s so rare as to basically not be a concern.
EDIT: back when Klasse Sealant Glaze was more popular, *everybody* applied it over top of Klasse AIO, and users of AutoGlym`s Super Resin Polish and their LSP (the name of which escapes me at present..) did the same thing. It was basically unheard of for anybody to apply either on bare paint (for reasons I never understood, but anyhow..) and when I tested the KSG by itself there was *zero* diff compared to putting it on top of the short-lived KAIO. Just offering those AIO + LSP combos as examples...