Plumber just left.  Very happy with this purchase.  We require a small toilet for a very small bathroom, and this was by far the best out there.  The seat itself is smaller than the top of the toilet bowl.  However, the seat cover covers the entire top, so It appears to be the design.  Works for me!  Should note we saved 100 by purchasing from Wayfair rather than from anywhere else, including Kohler, due to Wayfair’s free shipping option.  Delivery went very well, though it understandably took some time. We live in the country, and the weight requires delivery by a carrier, so we have to wait for one to be coming our way.