Tyrion and Cersei Lannister finally got the chance to battle it out Monday night, although it may not have been in the way Game of Thrones fans envisioned. Peter Dinklage and Lena Headey, who play the perpetually at-odds siblings on the HBO drama, made an appearance on Conan to play a few rounds of Overwatch during the host’s latest “Clueless Gamer” segment.