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.

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?

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.

The two men were seated next to each other at the National Cathedral in Washington, D.C., talking before Carter’s funeral officially started. Trump leaned in to say something to Obama, who listened before laughing and smiling as Trump continued to speak into Obama’s ear.

Donald Trump and Barack Obama shared a joke at Jimmy Carter's funeral - and now a lip reader has revealed exactly what the two former US Presidents said to each other

President-elect Donald Trump and former President Barack Obama appeared to indulge in some grave humor before the start of Jimmy Carter’s funeral.

Donald Trump publicly interacted with his former vice president Mike Pence for the first time in four years on Thursday at Jimmy Carter's funeral.