Not this again.
This subject has been gone over time and again on here already and I'm pretty sure both sides agree: Hung Fa Yi and TWC are
not the same system and both stand on their own. Even a quick look at their SNT clips will show this to be the case.
And yes, while it appears that they are closer cousins and share more similarities than if compared to most of the other YM and non-YM lineages (I mean, they are ALL WC and will have similarities to varying degrees), they are still 2 separate systems.
Regardless, IMO, to really answer this, one would have to have some direct experience in at least 2 of the three (which I'm assuming LCP does not, but I could be wrong). But I'm interested in seeing what he has to say!