Many royal watchers witnessed how Kate Middleton has presented each of her and Prince William’s babies Prince George and Princess Charlotte at the steps of St. Mary’s Hospital’s Lindo Wing. Details of the royal birth have been sparse, however, one of the doctors who helped with the Duchess of Cambridge’s delivery has recently shared some interesting information surrounding the royal event.

The revelation was made by Professor Tiong Ghee Teoh and Dr. Johanna Bray who were both part of the team dedicated to support Kate during her delivery. Professor Teoh is a consultant obstetrician and gynecologist at St. Mary’s Hospital while Dr. Bray is an anesthesiologist. Both medical professionals were also invited to attend the Queen’s Garden Party held at the Buckingham Palace on Tuesday, Telegraph reported.

Professor Teoh revealed to reporters present during the event that he served as the back-up physician to Guy Thorpe-Beeston, who delivered both Prince George and Princess Charlotte in July 2013 and May 2015, respectively. The doctor also shared that the team comprised of 23 consultants and hospital staff was formed to attend to the needs of the Duchess during her pregnancy and delivery. The team included two obstetricians, three anesthetists, three midwives, four pediatricians, two special care baby-unit staff, four surgical staff, a lab technician to handle blood tests and four senior managers.

He recounted how the team would regularly meet to discuss birth plans and to prepare for potential emergencies. “Anything that could possibly go wrong we had a team of people behind each specialty. Everyone was sworn to secrecy about who it was,” Professor Teoh stated.

Dr. Bray also recalled being “on-call for three months” during Kate’s previous pregnancies. She also shared that although they were not present during the actual births of Prince George and Princess Charlotte, they “were [present] behind-the-scenes,” as stated in the same report.

Both physicians also had the chance to meet the Duchess during the Queen’s Garden Party. Professor Teoh stated that the royal mother-of-two was “very appreciative” of their services. “She said there were a lot more people behind the scenes than you would realize,” the doctor added.

Meanwhile, Prince William’s wife was recently spotted enjoying a walk with children Prince George and Princess Charlotte. The royal trio took a stroll around the Kensington Palace gardens on Monday, Hello magazine reported. Kate was said to be holding on to Prince George’s hand while she pushed the baby pram that carried Princess Charlotte.

Eyewitnesses also shared that the Duchess even waved to onlookers as she and the two royal children passed by.