The president-elect said he "didn't realize" one thing about the exchange at Jimmy Carter's funeral until he saw footage of it.

The former president and once-again-future president, who are historically something less than besties, chatted it up before the service began. (Michelle Obama was not in attendance.)

After Trump launched his bid for his first term in office in 2015, Obama, then-president, mocked his chances of ever assuming the nation’s office. The incident, which occurred on a late-night comedy show, went viral after Trump went on to win the presidency not once but twice.

Former first lady Michelle Obama did not attend President Jimmy Carter's funeral at the Washington National Cathedral — and social media took note.

The former first lady was notably absent from President Jimmy Carter's state funeral service, leading Barack Obama and Donald Trump to be seated next to one another

Former President Barack Obama attended Jimmy Carter’s state funeral on Thursday without his wife, Michelle Obama, although a spokeswoman for the former first lady said she sent her condolences to the Carter family.

Michelle Obama missed Jimmy Carter’s funeral because she had a scheduling conflict, according to a report. A person familiar the former first lady’s schedule told Politico that she is home in Hawaii instead of paying her respects to the former president at Washington National Cathedral in D.C.