What gets me is in the last movie it is Spock prime who tells his younger self that he has located a planet suitable for Vulcans. How did Spock prime become that important in such little time to determine which planet for them to relocate to? If he did then surely Sarek is well aware of him by this time. The Enterprise crew sure is as seen in this movie. If not then new Spock should have got Uhura to patch the communication between him and Spock prime in his quarters or some private location near the bridge so nobody would know there were two of them.