I believe there is a compelling argument for the role of repetitive presentation during the dreaming phase of sleep.
I posit that the phenomenon of repeated presentations during the dreaming phase of sleep plays a critical role in memory consolidation and learning reinforcement. This intricate process involves oscillatory waves that rhythmically hammer both the hippocampus and the cortex. Such activity is crucial for driving the learning experiences accumulated during the day—particularly those encoded during delta coded-surprise during recall-perception—back from the hippocampus to the cortex. This not only reinforces but also strengthens the neural connections within the cortex, enhancing our ability to recall and utilize the learned information effectively
More detail on the hand-wavy “delta coded-surprise during recall-perception” thing: