Sous vide cooking time

I found the recipe for cooking duck breasts with Asian greens. The time for the recipe is for 1 duck breast. Does the time increase if i want to cook more than one duck breast? I would like to cook 2 and was wondering if multiples would change the time.

Sous vide cooking time usually depends on thickness of food in the bag. The standard recommendation is to put each portion in separate bag. If the bags are not crowded in the cooking vessel (the water should be able to circulate around each bag) the cooking time won’t change no matter how many portions you cook at the same time.

I can’t find a good guide to tell me at what temp & time for different weights of pulled purport, or pork butts.
I can find guides for everything else but larger meats.