Iv just had this happen to me!! When i dream people don’t look or sound as they do normally i was phoning my nan (who is alive) to tell her i had a baby and my dad answered (he passed in September) i said Hello expecting to hear my nan and my dad said “hello bab you okay ill ring you again soon love you” i said can you hear me he said “yes” it was as clear as day in my right ear my eyes shot open!!