Welp the only downfall of data transfer from other timelines is that it sometimes mixes in different information, to the point where it creates a whole new event or dream. Too much information causes overload and this is why some dreams are too random.Not all dreams are real. I used to have James Bond type dreams that I would wander through as if invisible during a take.
Other dreams are data transfer from parallel timelines. There we will see people we know well but they will look quite differently from how they do on this timeline. Parallel processing existed long before computers.
Some dreams are symbolic only because the human does not have the mental imagery/beliefs needed to show the sequence accurately.
Still, we can always go back in time and re-enter the dream and interact with the intelligences.
Interacting in dreams is true though, I'm actually amazed at how realistic it would seem.