Did you feed him again in a separate container?

How much does your 4 ft bp weight?

1 asf (my adult asf's are 60-70 grams) would not be enough for mine in one sitting let alone last 2 weeks.
My bp is probably the same length as yours and weighs 1825 grams. It eats 100-125 gram rats every 7-10 days. I can tell by the way he is acting when he is hungry.
I also feed all of mine in their own cage and have no issues with cage aggression.