BRAD TOWNSEND The Dallas Morning News MILWAUKEE – Even here, 850 miles away on a cold, damp night in the Brew City, one could practically hear the howls from Mavericks fans back in Dallas. Christian Wood started the third quarter. Wood and Luka Doncic led a 21-13 run to pull defensively challenged Dallas to within one point of East power Milwaukee in Fiserv Arena. “What took so long?”…