NEW YORK CITY — The New York City Subway System is full of unexpected interactions. But for one late night host, what was supposed to be a routine appearance on Subway Takes, ended up becoming a heartfelt reunion. Comedian Connan O’Brien and Brooklyn bar owner Debbie Shields had what was described as a short but passionate relationship, lasting only a year and half. Over the course of their time together the couple had two children, before O’Brien had to leave the family and