Former Secretary of State Hillary Clinton had an “awkward” moment with her Democratic primary opponent, Vermont Sen. Bernie Sanders, Friday.

During a four-star luncheon at the Capitol building to celebrate President Donald Trump’s inauguration, Clinton and Sanders engaged in what was described as a “cool reception” by Alexander Bolton from The Hill, and “one of the more awkward moments of the lunch.”

The failed 2016 Democratic nominee for president was under the microscope Friday, as the world watched her rival assume the highest office in America. Some media outlets previously questioned if Clinton would attend Trump’s nomination.

While the focus was mainly on her interactions with the new president, Bolton described Clinton’s icy exchange with Sanders, whose insurgent campaign forced Clinton to the left on numerous issues.

From TheHill:

Clinton took a while to acknowledge Sanders after he made his way through the crowd to say hello. When she did finally notice him, they had only a brief exchange. She spent far less time talking to him than to the other Democratic and Republican lawmakers who lined up to chat.

Clinton did not “embrace” Sanders as she had other Democratic lawmakers and spent more time chatting with some Republicans, such as Ohio Sen. Rob Portman.

Clinton and her husband, former President Bill Clinton, attended the inauguration along with all living former presidents, except for former President George H.W. Bush, who was recently hospitalized in Houston.

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