I have heard and read that Tibetan Buddhists believe that upon death the body’s spirit goes to an in-between state called the bardo. This is a period after death when consciousness is disconnected from the body. The soul’s disembodied state while awaiting rebirth. It is a time of potentially frightening visions. Eventually the spirit or consciousness finds a body to enter - rebirth occurs. A new incarnation that may reflect the development and lessons learned in previous lifetimes.
Even within our current embodied lives we experience mini-bardo states such as being between jobs, between morning and afternoon, between life partners, between home and workplace, etc.
These in-between places give us deep insights into reality.