world of darkness – How does a vampire fill up with "The Thirst of Methuselah"?

I have a question about the food shortcoming "Thirst for Methuselah", found on page 181. According to the text, "your hunger can only be completely quenched by the blood of supernatural creatures … otherwise, it remains constantly to a minimum of 1 "Does this replace the usual rule where the only way to" completely satisfy "hunger is to drain and kill a human being? (p.212) Are they stacked? If so, is hunger reduced to 2 until you find someone supernatural to drink? Or do you have to bleed a supernatural creature to lose your last starving death?