Remark: What was paid for

The protocol uses unboundedly fast gate control as $L\to \infty$, declared directionally available moving carriers, an external clock, and a geometric comparison model. With a fixed nonzero gate duration, the displayed delay would not vanish.

It is not a realization within the original finite-future carrier, a local relativistic field construction, or a derivation of physical propagation from the DN form. Its resource ledger is part of its statement, not a universal complexity bound.