Module Based Map Generation With Navmesh?

This topic may have come up before, but I couldn't find it so I figured I might as well ask. I have a random map generator that works using modules. Each module is a predetermined prefab, therefore the shape of the navmesh per each module would be known already. Is it possible in some way to pre-bake these navmeshes, generate the world, then more or less staple them together?
I have tried using Navmesh Surfaces to generate the navmesh in real time, but I keep getting very strange results.
Any and all feedback would be really appreciated, thanks for your time!

 

Hi @Camronas,

Never done it before, but is it possible to use offmeshlink for each prefab navmesh to staple them together?