Wales win over South Africa owes much to Rhys Webb and Dan Biggar

• Wales 12-6 South Africa• Welsh half-backs’ survival instincts pivotal to victory• Sam Warburton: We can kick on nowAt the end of what was often a disturbingly jarring contest under the Millennium Stadium’s closed roof, a lid that offered no release of the day’s tension, Rob Howley, who knows a thing or two about playing and now coaching in stressful conditions, was lavish in his praise of the Wales half-backs, Rhys Webb and Dan Biggar.In a style that the assistant to Warren Gatland considers “unique”, the scrum and outside-half had “navigated” the winning team around the park, allowing Wales…