Complex sentence: In February 2017 the audio version eliminated the commercial/PSA break at the two-minute mark, so that the newscast ran only four minutes, but the commercial minute was restored in May 2017, returning it to a five-minute newscast.
Split into simpler sentences: In February 2017 the audio version eliminated the commercial break at the two-minute mark, so that the newscast ran for only four minutes. The commercial minute was restored in May 2017, returning it to a five-minute newscast.