It might help researchers to clarify this idea better: "Visual imagery - While remembering the event, I can see it in my mind."
I can, for example, see my wife quite clearly at our wedding rehearsal 23 years ago. However, this is because I am recalling the several photographs that I've seen of that day. I do not have many personal episodic memories or reliving memories of that day (a few maybe).
I could not recall the fellas who were my groomsmen, for example. I never really studied those photographs, and I was surprised when my wife told me who they were.
Yes most of my “ visual” memories are from looking at old photographs. I remember the floor plans of the many places I’ve lived, but don’t remember my graduations, or birthdays. I remember the feeling of hanging with my grandma, but don’t recall her face. But I do recognize her in photos. Memory is a weird thing