I was inspecting a pseudolanguage and noticed that, while both the PP and the VP are licensed by the same rule, in the PP the HCONS link between the quantifier and the noun is lost. The VP looks fine.
What I mean is, I looked at the local AVMs for both NPs, they looked fine. Then at the PP level, the HCONS were broken in the PP.
But of course this can’t be the Head-Comp rule as it is the same in both situations. So I am missing something.