Dream Walkers were divided into many different levels with the top of the food chain being the ones with the ability to directly travel from dream to dream with absolutely no problem whatsoever no matter where they were in the world and no matter where the dream wielders were, It was almost like teleportation for them.
In fact, for high-level dream walkers, the Sea of Subconscious was no different from a very large plaza where they would sometimes meet to make deals and exchange information with each other. It was more akin to a communication hub for the ones with the ability to Dreamwalk.
Such was the nature of this place.
Obviously, Adam still had a very long way to go before he would be able to reach the top level… He was talented but not enough to straight out access the highest level of Dreamwalking from the get-go.
What he could do though, was enter the dreams of people who were asleep by making contact with their body.