diamondmonster You can combine multiple skeleton atlases into a single atlas: choose Single atlas in the Texture atlas section of the export settings:
If each skeleton has its own separate Spine project, you can use the texture packer. You can pack all the images used in the two skeletons into a single atlas by specifying an image folder that containes them in the Input folder field. Note that for a single atlas to be imported correctly at runtime, the image paths of the skeletons must match the paths written in the atlas.
