The full-back kept the move flowing with a short offload to returning captain Marco Wentzel and his perfect pass found Denton advancing at pace to saunter clear from 20 metres out.
The onslaught resumed at the other end, when Hohaia sold a dummy before releasing Sa'u for another try, while a superb offload from Jared Waerea-Hargreaves allowed full-back Greg Eastwood to cross.