Great post at clarifying some of the questions. However, I am not sure that the second question (about the bandwidth being recovered) has been understood correctly. If I may, what I would understand by that question is the following scenario.
Let's say I have a 100kb bandwidth available, and I have used 95kb, which puts me at 5kb available. If, hypothetically, my maximum bandwidth remains constant at 100kb (i.e. activity on the platform would not change), will I permanently have 95kb used?
Now, as you pointed out yesterday, the bandwidth is averaged out of a week, so if let's say I used 120kb and am at a constant -20%, in a week of inactivity, I should be back at 100%.
That's just how I would have understood the question, but maybe your answer was sufficient.
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Awe yes! If that is the intention than yes the amount will reload after a set of time as long as the user is not so low on steem power that they get "locked out".