Connect Mesh when use Kangaroo

I’m trying to do a simulation involving both a solid part and a thin wrap part dropping down. The Load is applied to the solid part and Wind (upwards) is applied to the thin layer part. They’re both meshes and should behave together, and probably rotate a little due to the wind before hitting the ground. But now they’re flying separately, while solid drops and the wrap flies higher. I’ve tried to use Coincident and MagnetSnap but none of them worked. How to let them aware of each other and connect?