very awesome, what a wonderful topic, ok here: I believe that dreams are connected very well with the real life ,even though I believe as well that not any dream is , there're kinds of dreams like mixed dreams I mean those dreams that one dosen't know exactly what they were dreaming.
as we sleep like 15 years, I don't think it's a long time cause you know sleep is like fuel, like time to relife so it dosn't really matter.
and maybe there're many things about dreams will still mysterious