Originally Posted by
LwoodY2K
Did you try it? I find the website allowing it or not to be the best guide here.
That being said, transiting the same airport twice on a 1way is generally not allowed by anyone. I would guess that you can't do it here.
The itinerary listed is such that it would be two one way fares combined to meet a round trip requirement. When combining fares, it's definitely possible to connect in the same airport multiple times on the same day.