just test it. italo has the same glitch. Workaround inside

It would not pull up Florence S.M. Novella.  Just pick whatever it showed up.  On the next screen, CHANGE the destination to Florence S.M. Novella. 

I picked a random date in April, a Wed in Mid Day, for the 2 persons travel together, you get a 50% off on the italo 2X1 discounot of 50% off.

Italo 2x1

-50% off for groups of 2 people  Smart Econ is 22.40 while Prima Business is 24.90.  Regular Econ is 25.90 and 30.90 respectively. 

You get a better pricing when travel in 2 to 10 persons together on italo.  Trenitalia does not offer this discount.