If you deny that the ultimate reality is in contact with two things, gand jarat, then you have adwaita. What does that mean? Because remember, adwaita says, brahman is the only reality. The world is an appearance in brahman. This whole situation is called data, not data. A negation of data is called ateta. That's th point of a mov you in a dream, are never in contact with the places and the characters in the dream never were it all appeared in your dream. Similarly, braHman is not in contact, in relationship with sentient beings or with the physical universe. This is called adwaite.
Swami Sarvapriyananda teaches the Katha Upanishad, which is one of the most popular Upanishads. The scripture concerns the story of a young man who goes to the house of death to find out what happens after death. The reply describes the nature of reality and the meaning of life.