Just looked up the A330 Terrain clearance floor warning function of the EPGWS and inside 12 nm from the intended runway the floor is 400' AGL. So unless AI descended below about 730' AMSL ( RWY 34 elev is 330' ) around 12 nm ML RWY 34 threshold then they wouldn't have got a warning. ( unless there is an obstacle close by as well )
Oh well so much for that theory!!