Thinkin is dangerous

I was just thinking, 

Since the railing on the staircase, (behind you in photo) matches the wood wall stain color, as do the steps leading upstairs, Perhaps a molding. A one or one and a half inch flat decorative wood molding stained the same stain color running along both walls at the bottom of the upper trim molding and above the lower baseboard trim molding. Kind of connecting the two room ends.