Smoothing the intersection boundary of two mesh - Questions

Is there a post-processing effect or method that can smooth the intersection line of two meshes? just like this:(smoothing the intersection area of head and neck)

Mesh generation - Wikipedia

Intersection of two tetrahedra: a) The edges of two non-adjacent

Blending between two meshes - Questions - three.js forum

Structural Mechanics and Design of Active Origami Structures

Occluding Contour Breakthroughs, Part 2: Getting It Right

Aerospace, Free Full-Text

Experimental study of a turbulent boundary layer with a rough-to-smooth change in surface conditions at high Reynolds numbers, Journal of Fluid Mechanics

Boundary constrained quadrilateral mesh generation based on domain decomposition and templates - ScienceDirect

Remeshing and Mesh Constraints — gradientspace

Surface intersection curves (green) are common in 3D animation. This