We complete an independent derivation of the leading-order nonabelian overlap integrals appearing in the Θ-closure program of Modal Triplet Theory (MTT) using twistor-action methods. Working in the high-coherence twistor regime where the gauge sector reduces to self-dual Yang–Mills theory, we fix the normalization of the four-dimensional gauge kinetic term directly from the twistor action with the canonical Fubini–Study measure on the twistor fiber. For the SU(2) sector, this uniquely determines the overlap normalization without reference to internal geometric spectral bounds. For the SU(3) sector, incorporating the internal color fiber and assuming canonical factorization of the massless mode yields an intrinsic overlap that agrees exactly with the direct geometric computation obtained previously. Agreement between the geometric and twistor-action routes provides a nontrivial cross-validation of the Θ-closure framework and establishes the leading-order nonabelian gauge overlaps as fixed by internal structure rather than chosen freely. Corrections beyond this regime are controlled by the coherence gap.
Peter Nero (Thu,) studied this question.