The emergence of space-time from entangled states

I recently read an article by Yasunori Nomura (https://arxiv.org/abs/1711.05263), in which he says that space-time is an emerging phenomenon. At the same time, space-time disappears when the holographic degrees of freedom are maximally entangled and when there is no entanglement at all.

Do I understand correctly that one can say:

1. Before the appearance of space-time, the universe was in a state in which the entanglement between the holographic degrees of freedom was zero.

2. Can there be a situation in quantum mechanics in which the subsystems are absolutely not entangled and suddenly, spontaneously, begin to entangle?