(Un)Shielding Youtube video, questions

I watched the Shielding and Unshielding YouTube video from the Incognito channel.

In the scenario laid out, at the end Grant says “There’s no connection between him and Eddie on the public Ethereum blockchain.”

  1. Yet didn’t he just send Eddie the same ETH that he put into the initial ETH contract?

  2. If Eddie traded the pETH he received for pBTC, pXMR, etc, THEN traded back to pETH, would that be the most private way to assure no connection between Grant and Eddie?