Complex sentence: Meanwhile, WZVN added an hour-long weekday morning show at 9 to piggyback off of "Good Morning America" and this production is currently the only local newscast in the time slot.
Split into simpler sentences: Meanwhile, WZVN added an hour-long newscast weekday mornings at 9 to piggyback off "Good Morning America". This is currently the only local newscast in the time slot.