How to make edges smoother without connecting two meshes?

[aspie.cow]

So let’s say I have a retopologized face mesh and rays (rays are saved as original curves just in case and as something turned into mesh, I have both options). Rays are arrayed around empty axes in the centre of the scene. How do I connect them to the face (or at least do something to look like it’s connected because rn they obviously look like two separated parts) without losing array modificators or without connecting each one by faces? If there’s no other option than to connect by hand, then how to do it in the most painless way since these are curves and after turning them to mesh a decimating it looks like a total mess?
Thank you

[Tachtian]

@colkai shared the link to an interesting tutorial in this topic:

Fuse landscape to a bottom curve/surface

You could extend the landscape very slightly, then use a combination of weightmaps, vertex groups and shrinkwrap modifier to have the upper part ‘weld’ itself to the lower one. It won’t become one mesh, but it will look like it is.This video shows the technique, it may be a hard-surface example, but the key points are valid. [snap seamlessly hard surface objects in blender]

It’s a about connecting a shrinkwrapped object seamlessly to the target object.