An intermediary is someone who can plead our case or relay information. In spiritual terms this might be represented by a religious teacher or a medium (spiritual channeller). As we try to achieve a balance between the demands of the spiritual and physical realms, an intermediary such as an angelic figure may appear in dreams.
Psychological / emotional perspective: When emotions run high we need someone who can ‘filter’ our energy to the point where it becomes manageable. Dreaming of an argument or conflict where an intermediary is present allows us to regain control and listen to reason.
Material aspects: In working life an intermediary performs the function of a negotiator. In dreams dealing with mundane matters, when two points of view need to be balanced, such a figure may appear.