Ok. Yeah that might be the case. The dates should be the same as you mentioned in the personal history section of your application.Everything is NO for me. They had highlighted "to cover all gaps" in bold in the request letter.
So I am assuming it is because either I had a gap somewhere which I wasn't sure about or maybe they wanted more info about that period.
I was once refused a visa to some other country and mentioned it on the statutory question. So along with my application I attached form 5669 while submitting e-Apr as I knew they would ask for it later.