Jar babies both. So who's the daddy?!?
One line of thought:
Andrew is a dick with a low IQ who has been protected his entire life and believes himself to be untouchable. He was advised not to give said interview but insisted on doing it anyway because he knows best.
Alternative based on CDAN reveals:
There is a war going on within the royal family caused by Harry's missus, who made the mistake of thinking she could push her Maj - the head of the firm - around with her demands. In a search for allies, Harry reached out to Sarah Ferguson, who will give away secrets she knows for $$$. Andrew got roped in. The rest of the Royals took sides with the Queen. Result - Harry is sent into exile and Prince Andrew gives a disastrous interview that implicates him to the hilt. According to Enty, the reference about going out for pizza was a real event where Andrew molested one of his daughter's underage friends in a bathroom. The mention caused such upset with the friend that she dropped out of attending Princess Beatrice's wedding.