Original sentence: At more than five-and-a-half years, it also holds the record for the longest-running country music series on network TV (Hee Haw was syndicated after two years on CBS, and Austin City Limits presents a much broader category of music)
Edited sentence: At five years, nine months it also holds the record for the longest-running country music series on network TV (Hee Haw was syndicated after two years on CBS, and Austin City Limits presents a much broader category of music)