During silent retreats, you are not allowed to have your phone with you, so no communication with the outside world is possible. Moreover, you are not allowed to write and read, needless to say, to speak with anyone. You are literally staying one-on-one with your mind, thoughts, and memories.
People going for full silent retreats report having imagining the entire movie scripts or books in their mind and remembering every detail of it after the retreat, when they can voice their creations or put it down in writing. Others say that painful memories from childhood appear in intense flashbacks, liberating them from misperception and suffering that followed it. But some people do not experience any benefits, just suffering. This may be either because they were not ready for the retreats or this type of experience is not suitable for them. In the end, there’s no one size fits all.