Oh, if that person adds you and you see each other online (you make sure to add that person), you'll have access to unlimited Chansey there. Since they're only in the Friend Safari, I recommend paging that person. Click the link in my message and see the first post on that linked page; the signature says Teddiursa, Audino...and Chansey. Identical to a Safari I have access to but I think is someone else.