No, I just wanted to give you an example. For instance, I don't speak Japanese, but if I was asked to teach it, I would do my best to teach things that are related to that language. I would not be able to explain cultural sensitivities or perhaps even to speak in Japanese.
In some of the country's regions, third, fourth or fifth grade generalist teachers are occasionally asked to teach mathematics, English and French as a second language. At times, their command of French is not good enough for teaching core French. The same goes for core English.