After 0:42 the moon starts to eclipse and everything goes on slow motion
At this point 10 clear church bells are heard before a flat line is heard from a ECG (the thing that measures the electrical signals in the heart and are always and are in hospitals) signalising that the person (or thing) is dead
BUT! a heartbeat can be shortly heard straight after possibly showing that exo can continue as 10 instead of 12 - the 12 is no longer needed for the person/thing to carry on living.
Немного не по себе от таких предположений...