Complex sentence: During the gap, Hattiesburg's WHLT and occasionally Selma, Alabama's WAKA were carried by Comcast to provide CBS programming to cable subscribers; still others may have received Jackson's WJTV over the air.
Split into simpler sentences: During the gap, Hattiesburg's WHLT and occasionally Selma, Alabama's WAKA were carried by Comcast to provide CBS programming to cable subscribers. Still, others may have received Jackson's WJTV over the air.