Chaitanyam after body's death

There are a lot of documented experiences on those who go through near-death experience on how they seem to have "eyes and ears everywhere". Are able to communicate with the creator. And how Sri Sri Ravishankar explains that this is a 2-3 day phenomenon. After which the body mostly chooses to move "forward" to the heavenly realm away from this world and experiences, than stay on.
The most important lesson for the loved ones left behind is to apart from mourning the loss, also encourage the departed soul to move on, not worry about us, and to express gratitude for all that they gave us during this life. This can be in silence, in thoughts, for the departed are not restricted to feel and know anything during this time.

My interest now is to share my point of view on how, from the Advaitic standpoint of Chaitanyam, does this work:

We know that when the Sthoola Shareera (body) dies, the Sukshma Shareera (prana/life force, mind) moves out, rests and comes back to take up another body unless it has realised its oneness with Brahman. Its next birth in this world will be determined by its karmas stored as vasanas (impressions) in the mind.
If it has realised its oneness with Brahman, then there are no impressions left due to its utter conviction about the nature of life, and so the Sukshma dissolves into Brahman, never to return unless divinely ordained, as the Avataras come back. (What isn't clear to me still is that for me, a Jivamukta state is necessary to reach this. If Videhamukta, it means the Sukshma Shareera after losing the body only realises Brahman, but that's too late in my view and would have impressions before body's death).

This Sukshma, which includes the Prana, and pervaded by Chaitanyam, is the reason why there is life throbbing. Without the Chaitanyam, Life would exist without "Awareness" of its existence. And this role of Chaitanyam convinces me that the tiniest insect, the plants, they all are aware. Of their existence and of those around. And that the only reason humans raced ahead is the added gift/tool of "mind".

And this Chaitanyam that pervades all is also the reason why Sukshma uses its awareness to see and hear those around. To take stock of its new status (as without a body) and settle to that fact. And then Sukshma leaves for an abode which I don't understand much. Apparently also a place where one meets ancestors (pithru), Gods, and then plans for its next birth into a body, to rid itself of its impressions.

The pursuit as always being to dissolve into Brahman..