Replying to
I have to mention that while I was doing this, I decided to set up VNC between two Macs, just to verify the Mac was going to be a VNC client. It was a two minute job, and an Apple support page spelled out every step, correctly and unambiguously. But oddly, nobody nowhere could tell me how to write a URL for the second display. I found it by guessing. (It's vnc://hostname:5901 .)
END RANT (for now)
11/N
#MacOSIsGuiltyToo #ButLessEgregiouslyGuilty