Sead SingverK

Hi, Everyone, Houdini green hand here.
I run into a problem, I was trying to create a growth vine that have multiple branches. find shortest path node does a great job, And I attach a carve node after it to create growth animation. but when I merge those overlapping segments, animation changed. they both start on every segments at the same time. I want them like it before did, which is when the main branch had travelled their position, and then they start to growth, not the same time. How?

Best Regards,
Sead