England’s live scrum training with Wales threatens to pack a punch

• Eddie Jones sees face-off with Welsh as vital to building ‘world’s best scrum’• England coach says he wants his pack to be really ‘challenged in that area’England and Wales are not to start their autumn international campaigns until Saturday but the week’s spiciest contest may well unfold in Bristol on Monday morning. A live scrummaging session involving both countries’ packs certainly has all the necessary ingredients, with the England head coach, Eddie Jones, saying the Anglo-Welsh showdown will shape his front-row Test selection.Perhaps sensibly, the exercise is being held behind closed d…