Reg Edwards wrote:
An antenna's radiating efficiency has nothing whatever to do with the
impedance of its feedline, or whether it's matched to it or not.

Now I suppose somebody will drag in the irrelevant matter of SWR on the
feedline.

Actually, you brought up the subject. :-) The feedline's power transfer
efficiency is just as important as the antenna's radiating efficiency.
--
73, Cecil, W5DXP