Monai auto 3D seg : Separating arteries and veins for lungs

Good Morning
I have a question regarding Monai auto 3D seg for lungs. I want to separate pulmonary arteries and veins and from my understanding, currently it cannot be done using Monai auto 3D seg.
However, when I run the Monai 3D seg on 3D slicer and only select pulmonary vessel (red) and pulmonary artery (blue) I am getting this.


Isn’t pulmonary artery (blue) = pulmonary arteries? or am I misinterpreting something.

thank you in advance