Can someone explain tandem nursing?

Holly • Girl mom 🎀 baby 2 ➕

How does it work? When you give birth do you go back to producing colostrum? Does baby 2 not get any colostrum because you already have mature milk? Does your body prioritize meeting the nutritional needs of the older or the younger baby? Obviously it works, but I’m curious and wondering if anyone knows the logístics of it all. Our boobs are amazing!