RJR posted:Thank you, Adrian for addressing my third question. I don't understand the electronics, but do understand the second paragraph.
Helpful analogy:
It’s like a 20ft string tied to the wall at one end and you wave the other end up and down. If the string is long (like the layout wires) and you wave your hand up and down fast enough (high enough bandwidth) there will be parts of the string that look like they aren’t moving in the middle.
Then If you pinch the string at those spots (put the TVS) it doesn’t mean the string won’t still be moving to the left and right of where you’re holding it. The only way to make sure a particular spot on the string isn’t moving is to pinch it at that spot.