Richard Clark wrote:
Six, the differences of Models employing the protocol and those not
employing it shows about 0.5dB difference.

The point you straddled in that marvelous enumeration of trivia, is that
there can be significantly greater that ".5dB" of difference in the
attributed current profiles along an antenna, due to a much greater than
".5dB" difference in some attributes of real vs. ideal loading coils.

But there's no question that it's possible to build an airplane that
flies, without understanding why if flies.

73, Jim AC6XG