Vortex Ending Explained [SPOILER!]

SPOILER ALERT: the following article contains massive spoilers, including the ending. If you have not yet seen the movie, proceed at your own risk, or better, come back to this article later!

SPOILERS AHEAD

Vortex Plot Summary and Synopsis

A retired psychiatrist with dementia and a struggling author with a heart condition live their final days together in an apartment.

Source: Wikipedia (CC BY-SA 3.0).