"No. It's not just two layers of illusion." Theo gritted his teeth.
A few moments ago, when he was trapped within that darkness, Theo realized a few missing links as soon as he used Blink. If he truly fell, the Blink could allow him to reach the floor since the distance wasn't that far.
Yet, it was useless to use Blink because he couldn't reach them anymore.
That was why he was convinced that he was still within the illusion even though he had been trying to dispel this illusion with his ability.
It was then he realized there were separate illusions to create this illusion. The first one was the floor. The floor itself was a real illusion floor that when they disappeared, it looked like he had just hit a real trap that would lead him to a pitfall with spikes at the bottom.