President Joe Biden has not yet formally announced his plans to seek a second term in the White House, though he did sort of unofficially do that on Monday, and his chief political rival, former President Donald Trump, thinks he may know why that is.

During a recent interview, Trump said he doesn't "see how it's possible" for Biden to run again in 2024 because "there's something wrong" with him, the Daily Mail reported.

Trump doesn't think Biden can run in 2024

Former President Trump sat down on Monday for an interview with Fox News host Tucker Carlson and was asked at one point if he believed that President Biden would "stay in the race" for the 2024 election.

"Look, I watch him just like you do. And I think it's ... almost inappropriate for me to say it – I don't see how it's possible – but there's something wrong," Trump replied.

"I saw his answer today. On television. About whether or not he was going to run. To a very nice guy named Al Roker. You can't get a softer question than that. That was a long answer, talking about the eggs and the this and that," he added. "Look, I don't think he can."

Biden, Easter eggs, and an accidental announcement

What former President Trump was referring to was President Biden's conversation earlier on Monday with "Today" show co-host Al Roker during the annual White House Easter Egg Roll event in which Biden seemed to informally announce his 2024 re-election effort.

Following a discussion of Easter egg hunts and "kindness" alongside first lady Jill Biden, Roker asked Biden if he planned on participating in any future Easter Egg Roll events after 2024, to which the 80-year-old president replied, "I plan on at least three or four more Easter egg rolls ... Maybe five. Maybe six, what the hell."

Pressed on whether that meant he planned on participating in the 2024 election, Biden said, "I'll either be the guy rolling the egg or the guy pushing them out."

He then added, "I plan on running Al, but we’re not prepared to announce it yet."

Majorities agree that Biden is "too old," have concerns about his "health and mental acuity"

As for former President Trump's assertion that "there's something wrong" with President Biden, he is not alone in harboring such suspicions but rather is aligned with a solid majority of the American people, according to a Yahoo News/YouGov poll that surveyed 1,516 U.S. adults between Feb. 23-27 with a 2.7 percent margin of error.

Asked whether Biden would be "too old" to run for another term, as he would be 82 in 2024, 68 percent said "yes," which included 85 percent of Republicans, 71 percent of independents, and a plurality of 48 percent of Democrats.

The pollsters also asked respondents about their level of concern with regard to Biden's "health and mental acuity," and 60 percent overall were either "very" or "somewhat concerned," which included 82 percent of Republicans, nearly 70 percent of independents, and more than 40 percent of Democrats.

Formal Biden 2024 announcement delayed

Interestingly enough, while President Biden seemed to let slip his 2024 re-election plans in his conversation with Roker at the White House, Axios reported last week that an official announcement and launch of his 2024 campaign was already delayed and could be further stalled until as late as the summer or fall months.

That contrasts with prior informed speculation that Biden was going to formally announce his bid for a second term following the Christmas holiday season.

One likely reason for the delay, aside from the fact that he has not yet built out the senior leadership of a campaign, is concern over the timing of the launch with respect to quarterly fundraising disclosure requirements.

The second quarter of the year only began April 1 and runs through June 30, so Biden could potentially kick off his campaign in July to start the third quarter, but given how notoriously difficult it is to fundraise during the summer months – not to mention the desire to avoid reporting embarrassingly low quarterly totals – the official launch could conceivably be pushed back until the fourth quarter begins in October.

One possible benefit of Biden's delayed formal announcement, as noted by Axios, is that it will likely keep "many ambitious Democrats and would-be staffers" sidelined from launching their own plans, and relatedly, in the event that he ultimately doesn't run, would seemingly clear the path of any possible late-launching challengers against his likely successor, Vice President Kamala Harris.