Record-equalling Will Joseph dazzles – but what did England actually learn in rout of Japan?

England defeated Japan 78-15 in a rugby international at Twickenham, with Will Joseph scoring five tries on his first appearance at the ground. Joseph's five-try haul equalled a record and was the standout individual performance in the dominant victory. Despite the emphatic scoreline, questions remain about what England genuinely learned from the heavy win over Japan.