Clinton clinched the party nomination earlier in June, by the time Sanders had stated he would work with Clinton to win over Trump, the presumptive Republican presidential nominee, he had yet to endorse Clinton and has kept his own election campaign alive.

However, now Bernie Sanders’s ongoing effort to avoid endorsing Hillary Clinton for president until the Democratic National Convention hit another hurdle Thursday, when Vice President Biden told NPR that Sanders was quickly coming around.

Weekend Edition co-host Rachel Martin shared the scoop through a tweet early Thursday night, quoting what Biden had just told the network in an interview to be aired later.

Sanders appeared after 3 hours on MSNBC’s “Up with Chris Hayes” and explained, for the umpteenth time, that his promise to help defeat Donald Trump and vote for Clinton did not amount to an endorsement so far.

“I talked to Joe, I think, was three weeks ago,” said Sanders, referring to a much-watched meeting between the two men at the vice presidential residence. “Look, on that issue, we are trying to work with Secretary Clinton’s campaign on areas that we can agree on.”

“What if ‘everything I can’ means going to rallies and doing the kind of thing that’s standard with campaigns?” asked Hayes.

“We are working with the Clinton campaign, trying to be able to come forward to my supporters and say: You know what, here’s the progress we have made,” said Sanders. “Here’s what Secretary Clinton is saying on this issue and that issue” replied Sanders.

Sanders also laughed when Hayes showed him a clip of Trump insisting that the senator secretly despised Clinton and wanted her to lose.

“I do not hate Secretary Clinton,” said Sanders. “We have disagreements on issues, but to say that I hate her is absolutely untrue.”