Thanks Malone, thanks Hugh.
What I find interesting is that, in everyday encounters with friends, family, colleagues etc., I really am reasonable, willing to listen to both sides of an argument and the first to admit when I'm in the wrong. In this instance, however, I was so sure I was in the right and, as the conversation progressed, just became increasingly so 😂
Hugh, I'm sure it was just a slip, but the puzzle was an Enigmatic Variations one.