Separation of the two worlds, sadness and pain, and at some point they blend.
That is where the wall is weakest, where the paint peels, and the plaster crumbles.
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I like to think of Walter telling Henry his story with a subconcious hope of being 'forgiven' in a way- maybe stopped and prevented from finishing his sacrament. Presuming his second death would be the only thing to stop him- but what if it wasnt the only path?
This man needed love, empathy and kindness, but was betrayed by the world when he needed it most. Set up for failure by fate.
Maybe Henry is able to provide that love he needs, too late to undo everything- but still able to show Walter that he deserves to have been loved. To give him the comfort that was withheld from him his entire life.
