With neither president revealing what the pair spoke about, speculation has mounted about the details of their conversation.

A video showing Donald Trump and Barack Obama, two political rivals, engaging in a casual conversation at the state funeral of Jimmy Carter went viral last week.

Obama received an invitation to the luncheon but declined to attend the event. Meanwhile, sources also confirmed Clinton was invited as well but he does not plan to attend

Former first lady Michelle Obama will skip the inauguration of President-elect Donald Trump, the second time in two weeks that she is not attending a gathering of former U.S. leaders and their spouses,

Former presidents Obama, Clinton, and Bush will attend Donald Trump's inauguration but will not join the traditional luncheon. The tradition started in 1897, but deviations have occurred before. Trump,

Former first lady Michelle Obama will not attend President-elect Donald Trump's inauguration on Monday, Jan. 20.“Former President Barack Obama is confirmed to attend the 60th Inaugural Ceremonies,

Other former presidents and first ladies are expected to attend as are tech billionaires Elon Musk, Mark Zuckerberg and Jeff Bezos.

The planned absence Monday follows another notable absence last week at the state funeral of former president Jimmy Carter.

Michelle Obama will not join her husband, Barack Obama, at Donald Trump's second presidential inauguration, a spokesperson for the former first couple confirmed to PEOPLE on Tuesday, Jan. 14