From the NB point of view, you could write one CER that covers both the MDR and MDD requirements, and be clear so that the NB can see the delineation. This can be complicated to maintain, and require a lot of mapping and explaining, so it may be easier to separate the products.
GLOBAL BOTTOM CTA INSTRUCTIONS:
To display custom copy instead of global copy in this section, please go to Show Global Content for Bottom CTA? toggle in the "Contents" tab to the left, toggle it off, save, and then REFRESH the page editor, the custom text will then show up and ready to be edited.
Turning the global content back on will be the same process, go to the toggle and toggle it back on, save and refresh!