Professor Kingsfield, 53, and his wife, Angela, 50, had no children of their own. Professor Kingsfield was well-liked by all his students at his university. The 2 of them were a loving couple. Angela and Kingsfield owned a house, a good quality bungalow, as joint-tenants. It was a beautiful house that they had lived in for many years. Since they had no children, they invited Kingsfield's aged mother (his only surviving parent) to live with them. Angela took very good care of her mother-in-law. Kingsfield's only sibling, his brother, Arthur, visits their mother at Kingsfield's house often. Angela's only surviving immediate family member was her sister, Dorothy. Her parents passed away long ago. Her brother, Ken, also passed away in 2010, leaving behind 2 daughters, Kate and Paula, who were very fond of Angela. Angela's nieces, Kate and Paula, often stayed over at Angela's house during school vacations. Kingsfield owned other assets, i.e. his BMW X5 car, 3 sole bank accounts, his collection of bank notes and an antique collection worth $2 million. Angela, too, had her own assets, such as her Mazda 6 car, 2 sole bank accounts and a lot of jewellery of gold and precious stones. Unfortunately, since 2011, Kingsfield and Angela started having frequent quarrels. They separated from each other when Kingsfield moved out of the house and stayed with a friend. 4 years later, Angela applied for divorce. Kingsfield said that, although he did not contact her in the past 4 years, he still loved her, and would prefer not to consent to her application for divorce. The Court was going to hear the case on 15 May 2020. On 5 February 2020, Kingsfield and Angela were on their way to visit Angela's dying grandmother in the USA. They agreed not to tell her grandmother that they were separated. Unfortunately, the plane that they were travelling in crashed. When the search and rescue team arrived at the scene, they were both found dead. Neither of them had made a Will. The family was in total shock and disbelief. After the funeral matters were settled, the family members had to attend to the estate matters of Kingsfield and Angela. Applying your understanding of the family law and the laws of succession in Singapore, please examine the following:

11. What is the status of the marriage between Kingsfield and Angela at the date of their deaths?