For a couple weeks here and there she was beating him by a smidge in absolute numbers (but not the male 18-34; her show is more popular among women). TBS managed to acquire syndication rights for some popular shows (like Big Bang Theory) to act as lead-ins for Conan, and his ratings have rebounded. He typically gets around 1.3-1.6 million viewers, whereas Chelsea Lately rarely cracks a million.
It’s surprising how important lead-ins still are in the DVR age.