You receive an instruction that seems odd and you don't understand and you don't ask WHY.
RAT 5, don't jump to conclusions. For your information I have asked 'why?' on several occasions, but haver never received a definitive answer. Our SOPs are mostly pure Airbus these days and would be the same as those of most other operators.
In any case, as I said in my last sentence: 'we are no longer permitted to fly circling approaches' so the answer is somewhat f@#$%ng irrelevant for our operation.