In Anapanasati, awareness of breathing. Buddha mentioned that it is possible to focus on breathing until the last breath is drawn and when there is no more breath, there is no place for conciseness to exist (consciousness cannot exist without one of 4 skandhas). And when no longer have consciousness to count as self, name/form ends.. and so on
The problem is counting as is self is that will go oneon and continue to count other consciousness out there and calls it as self, thus rebirth. the definition of sattanam is not easy to understand. Technically, there is nothing to transmigrate but the dilution of self. Thats how i understand it.