BW2 had the DNA splicers so we know that Pokemon fusion is not impossible lore-wise.

But is there any way that fusions between any two Pokemon could ever realistically be implemented in-game?
I'm asking mostly from a technical standpoint.

Baically would it be possible to have an algorithm that fuses the models together (and calculate the stats etc.)? Basically something like http://pokemon.alexonsager.net/ , but with 3d models and not as rough looking. Do you know of any other game that had a similar system?

Not asking if it would suck or if would ruin the game or other shit like that, just if it's technically possible to do.