Is It the Source of the Light of Life?

The subtle body including the prana is central, it reflects consciousness back into this body mind system and illuminates it but prana is not central. We have the experience of light of life, we have this experience of living, all these living experiences because of consciousness, not really because of prana. The actual topic was atman brahman, that's what nachiketa asked, what happens at the point of death, and what is the real nature of the self? Now back to the actual topic, what was the actual topic?