The split bus mode means that the mechanism will search for items for a recipe not in all tires at the same time, but for each one individually.
Switching between the normal search mode and the split search mode can be implemented as a button in the machine controller.

This will solve the problem of intersections recipes by feeding them into different bus. It will also open up a convenient opportunity when using items that are not consumed during use and act as the main one when choosing a recipe, for example, configuration circuit are a clear example of this in GregTech.