The whale watched the hero, completely terrified, and just smiled, hiding its exhaustion. They weren't one single person anymore, due to the great wear and tear, they separated again without even realizing it.
Alm and Bruno had the power to choose the exact location where the miracle would take them in this universe; obviously, they selected the last place where they had memories of being there.
It was a shot in the dark; if they failed, they would face serious problems in taking down this hero, but they had no other choice. They didn't know if their old bodies would still be there; maybe Heaven's Will had done something, as they didn't witness the process that took them away. They remembered that, in the past, during the confrontation with the Queen's will in the universe where they became a Cerberus, she claimed to have given orders to invade this universe, but nothing was found. (Chapter 205)