Complex sentence: Later that year, WOIO added a weekday morning newscast at 6 a.m. and pre-empted most of the first hour of "CBS This Morning" with local news; they also added a noon newscast around the same time.
Split into simpler sentences: Later that year, WOIO added news at 6 a.m. and pre-empted most of the first hour of "CBS This Morning" with local news. They also added a noon newscast around the same time.