Experiencing Bardos

Gavin (our TOK teacher) once told us about bardos point and the way it works. but reall i've been searching for this bardos point and it becomes more and more interesting for my point of view. Once I tried to sleep doig his perception of bardos, with my breath and really worked.
but what concerns me is that i foind different deffinitions of bardos and that actually there are stages of bardos.

this is what i found in Wikipedia:

The Tibetan word Bardo means literally "intermediate state" - also translated as "transitional state" or "in-between state" or "liminal state". In Sanskrit the concept has the name antarabhāva.

Shinay bardo (Tibetan): is the first bardo of birth and life. This bardo commences from conception until the last breath, when the mindstream withdraws from the body.

Milam bardo (Tibetan): is the second bardo of the dream state. The Milam Bardo is a subset of the first Bardo. Dream Yoga develops practices to integrate the dream state into Buddhist sadhana.

Samten bardo (Tibetan) is the third bardo of meditation. This bardo is generally only experienced by meditators, though individuals may have spontaneous experience of it.
Samten Bardo is a subset of the Shinay Bardo.

Chikkhai bardo (Tibetan): is the fourth bardo of the moment of death. According to tradition, this bardo is held to commence when the outer and inner signs presage that the onset of death is nigh, and continues through the dissolution or transmutation of the Mahabhuta until the external and internal breath has completed.

Chönyid bardo (Tibetan): is the fifth bardo of the luminosity of the true nature which commences after the final 'inner breath' (Sanskrit: prana, vayu; Tibetan: rlung). It is within this Bardo that visions and auditory phenomena occur. In the Dzogchen teachings, these are known as the spontaneously manifesting Thödgal (Tibetan: thod-rgyal) visions. Concomitant to these visions, there is a welling of profound peace and pristine awareness. Sentient beings who have not practiced during their lived experience and/or who do not recognize the clear light (Tibetan: od gsal) at the moment of death are usually deluded throughout the fifth bardo of luminosity.

Sidpai bardo (Tibetan): is the sixth bardo of becoming or transmigration. This bardo endures until the inner-breath commences in the new transmigrating form determined by the 'karmic seeds' within the storehouse consciousness.