"I suppose my question refers more to after-death state."
We are all, of course, free to believe whatever we wish, so I expect that
you will receive a wide range of answers to your question. Many forum
members seem to be mixing different Buddhist traditions. But, here is the
opinion of a modern writer from within the Theravada tradition.
From: What the Buddha taught, by Walpola Rahula - online version - Link: http://www.quangduc.com/English/basic/6 ... ht-04.html
"Some popular inaccurately phrased expressions like ‘The Buddha entered into Nirvāna or Parinirvāna after his death’ have given rise to many imaginary speculations about Nirvāna. The moment you hear the phrase that ‘the Buddha entered into Nirvāna or Parinirvāna’, you take Nirvāna to be a state, or a realm, or a position in which there is some sort of existence, and try to imagine it in terms of the senses of the word ‘existence’ as it is known to you. This popular expression ‘entered into Nirvāna’ has no equivalent in the original texts. There is no such thing as ‘entering into Nirvāna after death’. There is a word parinibbuto used to denote the death of the Buddha or an Arahant who has realized Nirvāna, but it does not mean ‘entering into Nirvāna’. Parinibbuto simply mean ‘fully blown out’ or ‘fully extinct’, because the Buddha or an Arahant has no re-existence after his death."
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I am not sure that I agree with this myself, but it is probably close to
the official position of Theravada ( if there is one).
For myself, I am happy to allow these questions to remain a mystery which
is beyond my capacity to understand.
Kind regards, Vincent.