Combines Corn head in sunflowersIJIJ

I seen a guy using an IH corn head last year on some flowers, I never got to talk to him but I thought to myself, hmmm wonder how that is working. What about shatter losses, do you see muchIJ

Here is a kit that lets you cut Sunflowers with a cornhead. All I know about it is what you see.

Thanks for your response, Kurt