"Well, look at how your bond is arranged." He held up his hand, palm up with the index and thumb curled towards each other. "There is a core, Spock," He pointed to his palm. "And then there are the three of you connected to him." A motion to the middle, ring, and pinky fingers spread out from the palm. "If you can communicate with him, and he can communicate with the other two--what is stopping you from possibly contacting them as well?" The explanation came with the appropriate hand motions, from the tip of one finger, to the palm, to the tip of another.