Baby rooting still even after feeding?

Envy

My son will be 2 weeks old tomorrow and I breastfeed. I make a lot of milk so I have no worries that I’m not producing milk. I want to know is it normal that he roots still after a full feeding? Or is he truly just still hungry? He usually spits up a lot too sometimes. I also pump and bottle feed him too occasionally and he drank a full 2 oz of breast milk last night and was still hungry after.