I think in some cases (having to do with subtypes) Business and Kindred relations are better than what is described or expected, even being sort of a quasi-duality even.
The trick is the following: the persons must be of subtypes where they both obtain DS from each other.
If you are accepting: Only works with Business, but both subtypes.
If you are producing: Kindred must be producing and Business accepting
Some examples:
IEI-Ni: SEI-Si, SEI-Fe
IEI-Fe: ILI-Te/ SEI-Si
EIE-Fe: LIE-Ni, LIE-Te
EIE-Ni: LIE-Te / ESE-Si
LSE-Te: ESE-Fe, ESE-Si
LSE-Si: ESE-Fe / LIE-Ni
These relations are better (in my experience) than mirage.
I posted this in viewpoints because I saw the relation thanks to model B.