Your not going crazy CJP933...you have a ability to connect with the circle of people around you through dreaming. Depending on how strong of a connection you have with each of them. People experience this type of dreaming when a loved one is close to death most of the time depending on how close they are. Where you can do it naturally.
To make dreaming simple just think of each person as a single address on a network grid..when we sleep our minds connect to this network a wireless network so to speak. Depending on the persons ability to dream they can go from tapping into a dream of another, getting information, to being able to see the future. Due to studies on dreams still unexplained at this time all we can do connect randomly.