They mentioned that when A tossed the coin, B would record the result on a spreadsheet. But did A know the result of each coin toss as it happened and read it o

They mentioned that when A tossed the coin, B would record the result on a spreadsheet. But did A know the result of each coin toss as it happened and read it off to B, or did B whisk the coin out of A's hand without A's knowledge of the outcome? Ideally it should be without knowledge of the outcome, so that A's tossing style wouldn't be subconsciously influenced by the result in a kind of self-inflicted Clever Han(d)s effect.