You don’t actually want to filter any elements based on individual parameters (if I’m understanding your grouping correctly). You want to combine A+B and group those elements by matching value. You can use GroupByKey to do this once you have the combined values. It shouldn’t make a difference in this case, because you’re getting your elements the same way, but it’s best practice to use the same list of elements to get both parameters. This ensures the values are aligned correctly. Then it’s just a matter of creating the views, cropping them, and isolating the elements. I’ve listed some helpful nodes below.
