It’s unlikely Sherlock Holmes will ever share a pipe with a Time Lord. “Doctor Who” and “Sherlock” mastermind Steven Moffat is up for an encounter between his leading men, but he reiterated to crowds at Comic-Con on Thursday that he doesn’t think a crossover will ever become a reality. During the pop-culture celebration’s “Doctor Who” session, the showrunner told the Hall H crowd, “I have no problem with them meeting. It’s all the rest of them that have got a problem. I’d do anything for a laugh.” Moffat later noted that there’s a precedent for the Doctor running into fictional characters. He crossed paths with Robin Hood last season. Moffat joked, “We can bring in Doctor Doom as well, and Spider-Man, all the Batmans. It would be the best program ever!”