The repeated text "TWO FAVS" and the appearance of the red heart.

The ad opens with a purple background and the text "TWO FAVS" repeated. A red heart appears in the center. Then, a Cadbury chocolate square and a Biscoff biscuit are placed inside the heart. The text changes to "TWO FAVS TOGETHER AS ONE". The scene transitions to show two Cadbury chocolate squares, and the text "ARE YOU A FAN OF...". This is followed by "SMOOTH CADBURY MILK CHOCOLATE?". The background turns red, and the text "AND CRUNCHY BISCOFF CARAMELISED BISCUIT" appears with two Biscoff biscuits. Finally, a product shot of Cadbury Dairy Milk Biscoff is shown with the text "NEW" and "TASTE IT NOW". The ad has a fast-paced editing style.