DALLAS — Despite a year-over-year decline in earnings and sales, the second quarter of fiscal 2021 was a “dynamic” one for Brinker International, Inc., said Wyman T. Roberts, president and chief executive officer. During a Jan. 27 conference call with investors, Mr. Roberts said Brinker is appreciative of all the lessons learned during 2020. “We learned that we can drive our business and increase market share despite the hurdles brought on by a global pandemic and widespread civil and political unrest,” Mr. Roberts said. “In . . .