Beitzah 12a-12b has R' Yohanan appalled at the suggestion that someone who cooked Gid HaNasheh with milk on Yom Tov and ate the product is given five separate sets of lashes:
- Cooking Gid on Yom Tov (there's no purpose for the product, since it's not Kosher, so there's no Ochel Nefesh).
- Eating Gid.
- Cooking meat and milk (not specifically on Yom Tov; just the general prohibition against cooking such a mixture).
- Eating meat and milk that were cooked together.
- Burning on Yom Tov (see 1).
He responds with shock and dismisses all the Yom Tov cooking violations because of Ochel Nefesh. But he doesn't say he's exempt from the lashes of cooking or eating meat and milk together.
Doesn't this undermine RaMBa"M's point that Kosher-species meat that is unKosher for other reasons is exempt from the added prohibitions of meat/milk mixtures?