I once flew in formation with a Jennie, during an annual Antique Fly-in at the Watsonville (CA) airport. The Jennie was owned by Jim Nissen, who was the airport manager at the San Jose (CA) airport. I had a hard time getting slow enough to not overrun the JN. For a couple passes over the runway, I had to start well behind, flying as slowly as I dared. So for at least part of the runway, we were pretty well even.
I was flying my Focke-wulf 44J biplane. It has a low stall speed, but still too fast for the Jennie.
Floyd