The offensive line is the biggest question mark for the Green Bay Packers as they get ready for their Sunday night game at Atlanta. Starting right tackle Bryan Bulaga has missed two days of practices with flu like symptoms, and he has not tested the injured right ankle that kept him out of last week’s season opening win against Seattle. Meanwhile, backup tackle Jason Spriggs did not practice Thursday with a bad hamstring — and starting left tackle David Bahktiari was limited for a second straight day with a hamstring issue. Kyle Murphy would start at right tackle if Bulaga doesn’t. Also, linebacker Ahmad Brooks missed his second straight practice with a concussion suffered against the Seahawks.