Depression secondary to tinnitus

I'm curious to hear from vets who have been approved SC for depression secondary to tinnitus. At your C&P, did your examiner ask when you first started experiencing symptoms/feeling depressed? What did you reply? I don't think it's expected that symptoms would start in service, since this is a secondary condition that could emerge years after tinnitus first appeared. But I'd like to hear from those who have encountered this same scenario and how you handled it. Thank you.