>>8712183
As usual, local can do it but it's not worth the effort required.

>characters' bounding boxes overlap making it impossible for regional coper
>the issue of using two character loras without regional prompter is unsolved
Nothing's stopping you from using regional prompter. Gen two nameless dudes in that pose, then use that image as a controlnet reference. Draw your region masks exactly, based on the characters' locations and poses which are now fixed. It's accurate enough to do individual hands or small pieces of clothing.

picrel is a proof of concept I posted ages ago along with the process and catboxes, it's somewhere in the archive. Blending the armors of two different girls by individual limbs.