A few days after the mission at the Corrupted Volcano, Adam and Fromund left the Bastion Opard.
Since they were in no hurry, they used fighter jets, which were much less expensive than teleportation.
Sure, it was long, but Adam and Fromund decided to use this method.
They rested well at the Bastion Opard; it was the first experience of this kind for both of them. The Bastions were not radically different from the Citadel, that was obvious, but they were not the same places.
From time to time, differences were visible because the Bastion Opard has existed for over 200 years in its current form. After the World Wipe, much will change, but that is a matter for the future, the near future.
Over several generations and two hundred years, with the passing of generations, each place acquired unique features, and the Bastion Opard was no exception.
A few days were not enough to see the whole picture, but Adam and Fromund did as much as they could.