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.)

Trump is obviously no fan of Biden, but Obama and his veep also have a famously complex relationship, only made more so after Obama helped nudge Biden to quit the presidential race last summer. Surely Obama feels some frustration that Biden fumbled a possibly winnable race; maybe he couldn’t help spill to his sworn enemy?

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.

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.

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

President-elect Donald Trump said that he and former President Barack Obama "probably do" like each other following Jimmy Carter's funeral.

President-elect Donald Trump opened up a little about his interaction with former President Barack Obama at the funeral service for former President Jimmy Carter on Thursday, acknowledging that it looked "friendly.

When asked Thursday what he and Barack Obama chatted about earlier at former President Jimmy Carter’s funeral in Washington, D.C., Donald Trump declined to go into details—but said he didn’t realize how friendly the exchange appeared to those watching.