Psychologically: They remember exciting (maybe particularly clarifies) dream history which was 'invisible, however, no pictures and scenes had, but (how a radio play) only as a story or dialogue took place? Then you have failed to hear something important or incline to fail to hear simply a little bit '' if you have just no desire for this topic. The dream wants to show you that there could be very worthwhile or informative information or talks for you if you only 'properly listen' would become and for some communication would more often have 'an open ear'.