Well 55loren, I still can't get the two pieces apart. But I can see that you are right in your directions. By pressing down on the tab shown in photo 1, such action raises the tab shown in photo 2. So the locking part of the connection is working. I'm pressing the right tab and enough etc. I just can't get a grip on the two ends strong enough to get them separated. And, I'm not a pup any more so that's not as unbelieveable as a person might think. I do thank you for the information you have provided. I now know how the connection works and what to do. I just need to think how to wiggle the two pieces apart. I tried to wiggle the two back and forth while pulling apart but no avail yet. It's 108 degrees today here so it's to the garage and try something, come back in and cool off and go back at it again.