Kaitlin Olson asked Phil Keoghan to be on “The Amazing Race” when they filmed the “Hacks” crossover episode that aired Thursday night. “Kaitlin, who plays [Jean Smart’s] daughter, she had expressed some interest in going,” Keoghan told Page Six in an exclusive interview. “And I started talking through it all with her.” But Keoghan, 58, said the “It’s Always Sunny in Philadelphia” actress backtracked once she heard “what’s really involved” in appearing on the CBS reality show . Phil Keoghan exclusively told Page Six that Kaitlin Olson asked him to be on “The Amazing Race” when they filmed the “Hacks” crossover episode. Courtesy of HBO Max and photographed by Kenny Laubbacher But Olson (seen above with Jean Smart during the episode) backtracked about going on the CBS reality show when she heard “what’s really involved,” Keoghan told us.…