The Incredible Hulk #323

Synopsis

With Bruce lying in a hospital and the Hulk felled by the Avengers, the two of them begin to expand and become intangible as the separation of man and monster is killing them. Rick calls the Vision who agrees to leave his pregnant wife to help. Vision becomes intangible himself and merges with Bruce, turning him solid enough and small enough to make the trek to the fallen Hulk. The Vision merges Bruce back into the Hulk but struggles to free himself as the Hulk wakes up and tries to take over. Only a plea from Betty allows the Vision to escape Hulk's body.