With the plan for Sigrid and Aren's fight against fate already in march, Zatiel was ready to handle the last of his problems before going back to the Beta Heavenly World.
On the floor where the Elder Brain resides, the broken body of Severus was lying on the ground and a small golden flame was on his heart, preventing him from dying.
Severus was in a coma due to the severity of his injuries, so even though he was a Rank 3 life form, he was not able to pose any resistance to Zatiel's Animus abilities.
The Neo-Demon had his hand over the head of the Magus. He extracted all the information on his mind no matter how insignificant it was and used the A.I. Chip to organize everything.
After a few hours, all the knowledge of Severus was already under Zatiel's control and the Neo-Demon understood the reason behind the abduction.