Cervarion's Dreamlike Experience in the Sand Garden

A Gia says he stood there for over an hour. She pleaded and pleaded and pleaded with him to leave, but he wouldn't do it. And finally, she had to physically pull him out. So Cervarion seems to have some sort of dreamlike experience in the sand garden. What's more interesting is that he seems to actually read the thoughts of a Gia rather and get inside her head to actually hear her train of thought while he's there.