Wales forwards coach Danny Wilson has acknowledged the physical challenge posed by the Springboks in their Nations Championship clash at Kings Park.Following a defeat to Argentina, Wilson highlighted the need for improved momentum and set-piece dominance.He praised Wales' progress in scrums and line-outs but warned that the Springboks remain the benchmark in world rugby.The coach emphasized the importance of matching South Africa's physicality and turning scoring opportunities into sustained pressure.Captain Dewi Lake's fitness remains a concern, though Wilson remains optimistic about his recovery.The match represents a critical test for Wales as they aim to prove their growth against a formidable opponent.