That is a rule, but it all comes down to temperatures more then anything else. I still remember a 60 Minutes, must have been 25 or 30 yeas ago. Meat supplier in NY city, was delivering meat from the back of just a regular cargo Van, no refrigeration. They followed him around, warm day, did all kinds of deliveries, had a whole pig in the back. Was the last thing delivered, so several hors of not being cooled. Everyone up in arms, how could this be, think of the bacteria and what it could do if someone eats it. And I can't exactly remember how the subject came up, but it was mentioned that when roasted, if it got above X temperature for Y time would it be OK...would it still present a problem for bacteria and illness...and the NY health inspector had to hum and haw and say no, that that would reduce greatly, if not completely eliminate that issue!
But he was quick to point out and they all seemed to jump on this, and rightly so, that the greatest fear would be if any of the pig juice had gotten on something and it was not cooked properly!
I really don't want chicken juice on anything but my gravy...I was just seeing if the class was paying attention! Come to think of it, I don't want pig or sausage juice on my chicken...but that can't be avoided!