A few books I’ve read on the assassination of President Kennedy mention that his wife was upset by the idea that his soul had passed on without receiving the Sacrament of Anointing or Last Rites. However the Priest who ultimately did administer the Sacrament comforted her with the assurance that one’s soul actually lingers with the body for several hours before moving on. I’ve heard this idea expressed in a few other contexts as well.
Is this an actual teaching of the Church? Have Any Catholic Theologians or the Saints discussed it? Or is it more of a folklore-y type thing?
'Stipendia enim peccati, mors. Gratia autem Dei, vita æterna, in Christo Jesu Domino nostro."
–Letter to the Romans, chapter 6, verse 23