Oh dear, sorry, Max - I didn't mean to sound miffed by your post. I'm always ready to be corrected. I've found that, whenever you think you've got something figured, life has a way of coming up with corrections. So best to sit back and enjoy them as a learning experience.
I think what I meant to say was "well I never, you live and learn, and thank you for going to the trouble of posting the pics".
Oh, and "happenstance" is a great word.