Quote - I've never seen that happen, actually, and I've used Mac since the 80s. In fact, if duplicate names appear on what you're trying to drop into the folder, it pops up a dialog asking if you want to replace the files or halt moving the duplicates into the new location.

I don't have a MAC. I'm only repeating what someone told me.  If I got it wrong, my apologies :)

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi