attaching 2 poly data

hey there.
where these two shapes are attached, I want to smooth the border of their intersection in a way that the sharp distinction between them fades or gets qualified, meaning the sharp distinction between two objects gets smoother, as if we fill the space so that the resulting U shape is more gradual compared to this.

I would truly appreciate your help with this.

@Charles_Gueunet

hey there. no ones could suggest me any idea or solution for this problem?

To be fair, ParaView isn’t really a mesh editing tool. Perhaps software like MeshLab or Blender may be useful.

I appreciate your suggestions, however I need to implement a solution based on the vespa deformation. I was wondering if anybody could give me any clues on how to acheive such performance through the vespa deformation.