Hey,
I'm so close without getting all the way there... (darn)
See the attached to where I am.
afdafer PQ Merge Try 2.xlsx

You need to create two different tables (on separate sheets). I called one sheet "FakeSQL Data" the other sheet I named "You Edit"...
When you set the source for your two tables you need to set connection only as you can't write over an existing table (maybe?).

I believe both sources need to be TABLES and not sheets. Look in the Advanced View. This might be my bad and why it doesn't work yet.

I have both as "Connection Only" and wonder if that is wrong too?

Maybe one of the PQ Guru's will jump on this and fix it for us, and explain more about the YouTube link above that was skipped.