The delusion known as ‘personhood’ or ‘self-view’ persists until it starts to collapse under the weight of its own evidential unreality. At which point the true nature of self and reality, namely consciousness, becomes increasingly* and eventually* entirely self-evident.
*Or: rapidly, immediately, suddenly, instantly…
And of course the opposite can also occur: the consciousness-nature becomes self-evident and in that light the self-view collapses.
Either way, enlightenment is the destruction of false views and the abiding recognition of one’s true nature.