that is 100% false and was demonstrated in the Forbidden Taste build, and the Gluttony of Elements build before that
instant recovery when damage is taken happens simultaneously and the difference is applied
instant recovery when damage is taken happens simultaneously and the difference is applied
That is not universally true in the way you imply. That happens for Gluttony of Elements because the result of taking elemental damage causes you to gain life instead of lose it (negative loss). The total changes to life as a result of taking a hit of damage are indeed applied together, so taking physical damage that lowers your life by 100 in the same hit as elemental damage that raises it by 100 results in 0 change, but this isn't that. This recovery is not happening at the same time. You are still taking the damage, and then healing afterwards, which you can't do if you're dead.