That indeed seems to follow from those three answers. It seems to separate our physical lives from our 'soul'. I feel a little uncomfortable with the idea from being so separate from my real life. Maybe this is where some of the ideas of shedding your relationship with life in philosophies/religions like Buddhism.
The answers do not fly if the soul is something intrinsic of the universe itself. This does not have to mean that two 'substances' are interacting, as it might be related to some deep truths about physics and the universe, many-particle/complex systems. or probability theory, if the universe is indeterministic. Those deep truths may not refer to Carthesian positions.