Well, basically you would need to decompile both of the packs from each mod and then figure out which of the individual anims (over several hundred) you want to keep and which ones you don't want. Then you need to make sure you got the right impact frames and radii for each individual anim and enter them into the descr_skeleton file. Then you can have it automatically compile it into packs.
It would be easier to do if the SS team were to use my anims as I have changed fewer than they did (afaik they use the RC anims for arrows and have other anims for new units etc) and use my skeleton config for the changed anims.

If you want to get them to do that, be my guest, but personally I'm not overly interested in merging my mods with theirs.