How long does each coin flip take, and how soon can I repeat the game? Does each flip takes an equal and finite amount of time? Do subsequent flips take half

How long does each coin flip take, and how soon can I repeat the game? Does each flip takes an equal and finite amount of time? Do subsequent flips take half as much time? Can I play Graham's number of games in an hour? An countable infinite number of games in an hour? If we're wondering about "most people" they might be sub-consciously taking the time factor into account.