No – I was not taught by dualists, which one would have to be to accept your definition of death. Dualists carry the pre-Christian Greek baggage of imaging the essential person as a spiritual soul temporarily trapped within a physical body. My doctoral training focused more on the Hebraic psychosomatic unity of the human person.
StAnastasia
Death a involving the separation of body and soul does not necessarily entail the type of dualism of which your speak, i.e. “the essential person as a spiritual soul.” The view that the soul is the essential person, or to put it another way, that the individual is a soul, is an extreme dualism held by Plato and Descartes.
However, there is the moderate dualism of the Aristotelian-Thomistic tradition, which the Church accepts as the best explanation of the human being as a composite of body and soul. The soul is, in this view, the principle of life and organization of the body.
The soul is not man, and the body is not man. Man is a composite being. The soul is a spiritual substance and therefore capable of subsisting without the body. However, the soul is not man since it is an incomplete spiritual substance, one whose nature it is to be united to a physical body which it animates.
Thus, within the moderate dualism if the Aristotelian-Thomistic tradition, death involves the separation of the soul from the physical body of which it was the principle of life.
The hylomorphic doctrine applied to philosophical psychology explains the ontological nature of man better than any other theory. So far, there is no better and fuller explanation of the psychosomatic unity of the individual than the moderate dualism of the Thomistic tradition.