On one side, Alexandra was asleep due to exhaustion and on the other, Eren was unconscious.
No one knew when he would wake up. Even the Goddess of Reincarnation and Rebirth, Sylvia couldn't find out what happened to his soul and how many days it would take to recover.
Sylvia had tried to peer into his soul, but, his soul rejected her invasion. She was very surprised at this as only Gods had the power to block her advances while conscious. Even though Eren was a God in their previous life, his current power would never stop her.
When she told Chaos about this, he told her about the change in Eren's voice during the match and the Ancient aura that was emanating from him at that time. Hearing all these, she concluded that Eren was more than what they had thought and he had numerous secrets.