Fuji had two reversal processes. One was a Kodachrome process and the other was a proprietary process similar to Agfachrome of the 1940s onward. The same is true of Konica. I have seen and run the Konica processes and have been told that Fuji product were quite compatible with the Konica products. They both derived from Agfa in WWII.
Konishiroku Emon, founder of Konica, which made Sakura film, was a personal friend of George Eastman. Konica was primary film manufacturer for Japan before and during WWII, but due to war damage, Fuji took the forefront. Therefore I assume some degree of formula crossover was quite possible or necessary.