"We phased through a mental space? I'm not sure how to describe it. When the Lion was sharing memories with me the previous Black Paladin interfered. He said that, 'When you die in this realm your body dies as well.' It couldn't be normal reality. I woke up in the Lion after it saved me."

Were it anyone else outside of the team he wouldn't have to said so. But Noctis has earned his trust. And he has experience that Shiro needs to draw on.