dreams of dead people

I've also had the same dream as a few other acquaintances about a friend of ours who died, but that was not at the same time. still, i heard about someone else having that dream after i did, so don't think it was just influenced from hearing about it, and then my other friend said an acquaintance, who probably wouldn't have heard about the dream from either of us, also had a similar dream about him Also, i've read about someone having the same/very similar dream as me about dead musicians twice. one time was on the same night, a few days after david bowie died. in these dreams, we have basically the same conversations with the dead person, in similar locations, and the dead person has a similar affect.