Well apart from sex, race, age, liver disease, certain medication and those who drink regular. Oh and food.
Err, “in a given individual” takes care of sex, race, age and regularity of drinking. liver disease will also be a constant there, not to mention an irrelevance in the “normal person” situation.
ANd, yes, we’re all clearly talking about the few hours after a normally healthy person starting a session and the situation you presented was that this is when some mysterious “other toxins” are being removed, preventing ethanol metabolism from starting immediately
What other toxins, foods or even medications did you mean that affect alcohol dehydrogenase, or even overall alcohol removal to a significant extent?