Original sentence: In April, Kellie moved to co hosting the Today Show working with Karl Stefanovic as the replacement co-host for Jessica Rowe, who was on maternity leave at the time however Rowe announced that she was leaving the Nine network on May 6, 2007
Edited sentence: In April, Kellie moved to co hosting the Today Show.Rowe announced she was leaving the Nine network on May 6, 2007.She was expected to be a replacement host for Jessica Rowe, who was on maternity leave at the time, however her chemistry with co-host Karl Stefanovic fuelled speculation that she would remain in this position even after Rowe's leave ended