If that happens then we first become aware when vision is more completely developed and concertized in the sidpa bardo.
1)When we sleep,and wake up,in this process the consciousness go through the clear light,light and ray(chonyid),awakened consciousness(sidpai).
Regarding on perception it is maybe right what you say,because in death it is the same,clear light,light and ray(chonyid),awakened consciousness(sidpai).
2)But in tibetan book of the dead 7. and 8. day chonyid,regarding now" not only" on the perception,he is" really" in the chonyid.The mind go up on 7. day now,because hier peacefull perception,by 8. day the mind go down because wrathfull perception.Not calendar days.The explanation:by 7. and 8. day find the description of tickles,so this is chonyid bardo.(i think chonyid is until the mind go up,and by 8. day go down)
Now i write no more,only say tha the book of the dead is multiply combined as explanation.