"Resume later" fonction, Intensity minutes and calories burning

Hi everyone.
I Juste want to share with you a strange behavior that I finnaly understand whith my Fenix 6.
It concern the Intensity minutes and Kcals counting.

Everyday I'm going to my work with my bike. I ride 4 times a day for that and to avoid having 4 differentes activity, I'm using the "resume later" fonction.
The thing is I have noticed that doing that, my intensity minutes going up during the day everytime i moved to take a coffee or to go to the bathroom for exemple... And it seems that I burne a lot of calories.

But when I didn't use the "resume later" fonction and stop my riding activity each time, my intensity minutes didn't grow during my day (wich is more comprenhensive).

I send you some picture to explane.