Cervical length

Virginia • Mother of 4 with our last little guy being born at 26 weeks. All is well and everyone is healthy. We are blessed 😇
At my 20 week ultrasound the technician said that my cervix was a bit long and could be due to a previous csection . I'm a bit confused about the relationship between the two. Everything else check out normal and we have a healthy baby boy. Anyone have a clue about this?