Here's another channel who speaks about first contact... He explains in clear understandable terms why it is impossible at this time.
And before you check the vid I ask you to understand. That you should NOT accept his word because he is channeling an alien.. Because as he himself (when he is not channeling) reminds us: he might not be. You should accept his word because it makes sense! If it does not make sense to you. Then just ignore it.
If you wish to understand Bashar even better. Check some of his other videos. He is a tease, he loves to play games with people. He does not take himself serious, and loves to make fun of our willingness to take things too seriously. In my mind over time "willingness to play" has become a sign of a spiritually advanced being. If you ever met a Buddhist Lama or a Sufi Sheikh you'll know what I mean.
Again, when he explains things, you probably will understand. But if you do not understand, then the communication is worthless and should be ignored. Whatever you do, do not take his word for it. Otherwise we'll just get the Goodchild problems all over again.
Bashar on First contact 1
Bashar on First contact 2