I most likely will be proven wrong but I have a feeling Connor is going to take this win. Floyd has been spending years carefully evaluating how his opponents move and knows what to look for when fighting a boxer. Connor is going to be unpredictable and move in a way that Floyd won't be used to.
I practiced martial arts for years (when I was a lot younger) and was always prepared when in a competition against someone with the same training. The first time I went up against someone that had no training/different training I hadn't no idea what to do.
My story is obviously completely different when talking about two professionals but I have a feeling Floyd just won't be able to anticipate what is coming nearly as well as he would when taking on a professional boxer.