Earliest and latest that all of the top six QB are selected

Here's an interesting competition (at least I think so), give your opinion on at what point in the draft you think is the earliest that we could see all six of the top QB prospects off the board and also at what point you think is the latest it could go before all six are taken. The winner of the competition is the person with the narrowest window in which all six QBs have come off the board.

I'll start: I'm gonna go with the earliest possible being by the eighth pick (inclusive) and the latest possible being 31 (inclusive). So my window is 24 selections wide. If all six are gone within the first seven picks, I automatically lose. If one or more of the top six QBs are still on the board when we get to the last pick of the first round, I automatically lose. Other than that, it would come down to if another "contestant" has a narrower window than I that includes the moment when all six QB prospects are off the board.