Will combining animations into a single file save resources?

We have a game with quite a lot of animation files. Can anyone tell me if they add anything to the build size?

Most are separate FBXs of 2-3mb each, which are exported with bones and controls but no mesh, though some do include the mesh. Our main character uses the animation from these files, but they are never brought into the scene. Will combining the animations and exporting them as a single file reduce the app size and memory? Or would that simply mean lots of work with no befefit?

Thanks.

If you are only using the AnimationClips, and the meshes and bones are not referenced anywhere in your game, then only the AnimationClips will be included in the build. So you won't be saving resources by combining the animations into a single file.