Using Arduino_Uno_R3 - CAD newby

You are very correct. My apologies. I’m the one who made it. And let me right now dispel your concerns about any schematic errors that are being implied - if I were you, my direct connections of the AD8244 unity gain buffer outputs would be a huge distraction and cause for suspicion of the designer’s experience level, so let’s get that elephant addressed: the AD8244 datasheet page 18 allows for such direct connections " For less power sensitive applications…". I’ve reconsidered and have decided to throw in a resistor from each paralleled buffer output minus one, so two of three or one of two will get a resistor when I parallel them.

But my following question here in this post is what I want to focus on right now:

I humbly and respectfully request that you allow me to ask clarification concerning your post How does KiCad know which symbol pin is connected to which pad of the footprint? in especially considering your statement from Tutorial: How to make a footprint (From scratch)?:

When I try to reconcile the two quotes above, I am thrown into the mode of “cannot proceed beyond this point with understanding until these unknowns are addressed” in my mind.
Q: WHEN is the mentioned “connection” accomplished? For example, is it when the netlist is manually filled in and then saved? Or is it done manually/automatically before/after then?
Q: Which .pro needs to be active for said “connection” to be made/created/built?
Q: Is there more than one place/tool from which this “connection” can be made?
Q: How can I EDIT or view someone else’s or my own such “connection”?
Q: My footprint and symbol for my HX711 leaves non-PTH pins unnumbered. Will this prevent success of a “connection”?

It would also have been most helpful if the term “ratsnest” would nave been included on the page " How does KiCad know which symbol pin is connected to which pad of the footprint?" so that it would have shown up in my initial searching. (I’m assuming the ratsnest comes automatic from building of a “connection”)

Thank you humbly for consideration!