Combine non-Delaunay tetrahedral mesh with CGAL triangulation from implicit domains

[dyollb]

Would there be any robust way to import a (high quality) non-Delaunay into a CGAL triangulation?

My idea is the following:

1. CGAL is good at meshing from implicit domains
2. but other tools may be better at meshing CAD objects with sharp features.
3. It would be nice if there was a way to import the mesh from 2. into CGAL and mesh other parts around it to get the best of both worlds.

Could this be achieved by setting the

• weights in a weighted Delaunay triangulation
• and/or adding points until it becomes Delaunay?
  I don't have a proper understanding of "weighted Delaunay triangulations", so not sure if this makes sense.

I see there was a related question here: #4125