Customers line up to order at Brown’s Bar-B-Que in Austin. (Photo ©Chris Wilkins/Texas BBQ Posse) Call it a continuing smoked meat puzzlement for the Posse: Why aren’t the lines longer at Brown’s Bar-B-Que trailer on South Lamar in Austin? Owner Daniel Brown has been cooking and serving barbecue for more than a decade. His trailer started getting some serious buzz in 2013 and over the years has been touted by Eater Austin, Texas Monthly, even Bon Appetit. Early this year, Conde Nast Traveler included Brown’s on its list of the 10 best barbecue joints in Austin. Daniel Brown Jr. slices…