If you looked away from the screen for a moment, you probably missed it. It was a quick smooch. Kate turned to her groom, said something with a smile, and the prince reached over, rather hurriedly, and gave her a very quick kiss.
Maybe that's why he kissed her again.
The second kiss came just before the Royal Air Force flyover. Another first on a historic day: two kisses on the Buckingham Palace balcony by a newly married royal couple.