The prequel era is all SMK stuff to bridge to the actual crossover
It's been a while since I've seen Scarecrow and Mrs. King (which I loved, by the way). Wasn't "The Agency" (or whatever they called it) just involved in domestic affairs? I don't remember episodes where they went international. But I could easily believe that Lee would know agents who worked in Berlin, or maybe he did an occasional international trip, particularly before he started working with Amanda.