How to manage the clash?

Hello. I posted Structural Framing.BeamByCurve Error a week ago and I solved the problem by defining left and right referece plane in revit family.

But another problem arises.
My structure seems to have a clash.

How to manage that problem?

also I attached my node picture.

Thanks in advance for everyone’s help :slight_smile:

In real life such tunnels usually include a soft joint in between the segments: