Failed to mesh with using Prepomax new Gmsh options

[synt]

@Matej

That is why all edges can only be meshed with an even (2, 4, 6, …) number of elements, which causes problems in getting the meshes to be coincident.

thanks for hint and i can confirm, keeping in even numbers of division for quasi-structured quad to be possible to merge.

body partition of bottom part need to satisfy equal face matching to be possible to merge as top part.