Hello Christian,
you can just maintain Determination B as a predetermination of Determination A. Of course, determination A is only executed if also its triggering condition is fulfilled.
So if you would like to always execute determination A as soon as determination B is executed (independent if the triggering condition of A has been matched), you might think of refactoring the logic of A into a method that is directly invoked out of determination B.
As alternative to the last option you could simulate changes in determination B that will ensure the triggering of determination A by the help of io_modify->notify_change( ... ). However, this last option very implicit and thus not recommended.
Best regards
Tilmann