“The mashgiach is probably paid by both organizations, when he comes for one, he knows exactly whats going on, on behalf of the other as well”.
Is it likely that yochy, who has a hechsher on his “place” doesn’t know that the mashgiach works for both hechsherim?
If that is the case, does the mashgiach look for “extra” or “more” details than yochy is expecting from the national hechsher? If the standards are the same, the mashgiach is just getting paid double for doing nothing extra??
Or, perhaps, the “heimishe” hechsher serves as a “clearing house” for products with the national hescher, for their constituency. Maybe they are stamping their approval on the national hechsher’s standards in this location, because their constituency has certain standards, and they are letting them know that those standards are being met by the national hechsher, in this particular case?
For example, if they are makpid on bishul yisroel for tuna fish, and the national hechsher isn’t, but in this location, only tuna fish that is bishul yisroel is being used, and the rest of their standards are in sync for this type of place, they will put their stamp on it too.
Or it’s a bunch of nonsense, in which case, the problem with the heimishe hechsher is even bigger. If they are playing games, than they are not trustworthy altogether, no matter what chumras they hold from! I hope not.