Trapped in timeless perpetuity

IIRC, the series ends with Mork trying the Time Boots again and they end up adrift outside of time itself ... forever. In darkness. Ageless. An eternity of Mindy listening to Mork's endless cocaine-fueled, train-of-thought monologues. I'm sure she went stark raving mad after a few years of it. But then after 100 years of it, she was probably glad it was him instead of someone with less to say or predictable and boring. What would they be like after 5000 years of nothing but each other's voices?