England and Lions face Dylan Hartley headache as red-card hearing looms

• Hartley will learn extent of latest ban on Tuesday or Wednesday• Possibility of 10-week suspension would rule out Six Nations openerDylan Hartley will discover on Tuesday or Wednesday the extent of his ban that could cost him the England captaincy in the short term and significantly damage his chances of leading the Lions on the three-Test tour to New Zealand next summer.The disciplinary hearing will adjudicate on what punishment the Northampton hooker will receive for being sent off after catching Leinster’s Seán O’Brien with a swinging arm on Friday. He had been on the pitch for six minute…