It seems to me that the Typhoon wasn't a direct descendant of the Tornado, but a parallel concept, with Hawker presenting two variants, a Vulture-powered one and a Sabre-powered one. The development of one benefited the other : the Tornado had been designed with a ventral radiator which was found to disrupt airflow over the tail fin, and it subsequently received a "chin" radiator, as originally designed for the Typhoon, on which it proved satisfactory.
The photo, incidentally, shows the Tornado in its ultimate state, with this modification.
The Tornado program was canceled by the end of August 1941, a month after Rolls-Royce had announced to stop Vulture development. The first production Typhoon had already rolled off the assembly line at the end of May.