Since the new stack and drain are already installed, which is why we found out that the bowl didn't fit in the first place, it just has to be hooked up.
And, in the 'what were they doing?!' category, this piece of concrete is in the bathroom floor between the old outlet and the stack. Why that one place doesn't have shiplap is anyones guess.And, of further note, the fellows who were to bring and install the new window did not show up. Apparently they were having vehicle trouble and will come tomorrow around 0900.