The only thing I can think of is typically major manufacturers don't want the general public to know
that their product can be had cheaper under another label, and typically don't advertise or acknowledge private labels with their "brand name" formulas.
Another thing that is very puzzling, the packaging is so similar to KA, I'd find it difficult to imagine TJ's doing that without affiliation. It's so close that if they weren't connected, KA could easily demand a cease and desist on the packaging.