clarification required: how does this process of conversion back to Steem work exactly?

Power down in your wallet. Starting 7 days later, you'll get 1/104 of your SteemPower paid out in Steem. If you get more Steem Power in the meantime you need to power down again to include that in the payouts (which will reset the next payout to 7 days)

clarification required: is this a parent/grandparent post

Your post is the parent of mine, answers to mine are your posts grandchildren.