PC-1364: Add further context on override

help_to_heat/frontdoor/interface.py

@@ -246,7 +246,9 @@ def create_referral(self, session_id):
             given_answers[property_type_field] = property_type_field_park_home
             given_answers[property_subtype_field] = property_type_field_park_home
 
-        # override loft access if no loft
+        # Users are given the option to select "no insulation" to improve question usability
+        # This and "below threshold" are functionally identical from the supplier point of view.
+        # They will be combined before the suppliers see it to improve supplier usability
         loft = given_answers.get(loft_field)
         if loft == loft_field_no:
             given_answers[loft_access_field] = loft_access_field_no_loft