In his short thousand-plus years of life, Rowan had seen numerous visions of the past and some of the possible futures, but he had never physically been taken to the past, making him wonder which dimension this unknown old man controlled.
At first, with the Tower of Greed, he was able to bring his consciousness back to the past, and after summoning the Twilight Bridge, Rowan did not truly move from the present to the past, his consciousness pillars of the present were sacrificed to create a bridge that linked the past, while the nature of the Ouroboros Serpent made it possible for him to steal the gains he had made from the present and bring it to the past.