(NewsNation) — Billionaire Elon Musk will interview former President Donald Trump on his social media platform, X, on Monday at 8 p.m. ET.

It also seems to represent a return to X for the former president, who has subsequently posted on the platform.

The platform, then known as Twitter, was a big part of Trump’s 2016 presidential campaign and his entire presidency.

Trump back on social media site ahead of interview

The live interview is scheduled for 8 p.m. ET and will be hosted on Trump’s official X account @realDonaldTrump. It will use X Spaces, a feature that allows users of the platform to host live audio conversations.

The “live conversation” will be “unscripted with no limits on subject matter,” Musk wrote Sunday, adding it “should be highly entertaining.” He encouraged users to post specific questions and comments under the stream’s chat.

The Trump campaign said it will be “the interview of the century.”

Musk posted some “system scaling tests” ahead of Monday night’s conversation, which is expected to have a high volume of viewers.

Trump made his return to the platform for the first time in nearly a year, sharing a campaign advertisement hours ahead of the interview. It marked just the second time Trump has posted on X since his account was suspended in the wake of the Jan. 6, 2021, riot at the Capitol and reinstated the following year. 

Musk’s reinstatement of Trump’s account in 2022 was part of the tech billionaire’s new approach to the platform’s content moderation policies after purchasing the company.

Just more than an hour later, Trump posted again on the platform, lamenting about the state of the nation’s economy.

“Are you better off now than you were when I was president?” he wrote. Our economy is shattered. Our border has been erased. We’re a nation in decline. Make the American Dream AFFORDABLE again. Make America SAFE again. Make America GREAT Again!”

Musk endorses Trump

Those who have followed Musk in recent years will recall a time when he said he didn’t really have an interest in backing either party.

All of that changed the day an attempt on Trump’s life was made at a rally. At that point, Musk outwardly said that he was going to endorse the Republican nominee.

You compare that to 2022, which was a very different tune in which Musk called on Trump to hang up his hat and sail off into the sunset, stepping aside for new leadership in the Republican Party.

The Trump-Musk relationship has improved dramatically in just a couple of years, to the point that Musk is now backing the former rhetorically and financially.

While the duo are ideologically aligned on the border and anti-transgender legislation, there have been some differences in thought.

Trump has been talking extensively about the issue of electric cars, saying the country isn’t ready to completely switch to them.

Of course, Musk heads up Tesla and is a strong proponent of electric vehicles. The two have politely disagreed in recent months, and you’ve even seen the former president address this on the campaign trail in Michigan.

“He’s never mentioned to me, ‘Why are you hitting the electric cars?’ Because he understands I’m not hitting it. I think it’s incredible. I’ve had them, I’ve driven them,” Trump said last month.

“They’re incredible, but they’re not for everybody. Some people have to drive long distances, and they tend to be more expensive, and, you know, they’ll probably be made in China.”

NewsNation partner The Hill contributed to this report.