Imagine the following scenario: On the 9th of January 2024 in the morning we wake up to news that President of the USA Joe Biden suffered a stroke and died in White House. The administration confirms that the death was entirely natural and no third party contributed to it. Even before the news reach all TV stations another one breaks: Former president of the USA Donald Trump has suffered a cardiac arrest and died in his residence in Mar a Lago. Early reports claim that the site was secure and no malicious actor could reasonably reach Mr. Trump so the death is most likely natural.
What happens then?
Them both being dead is both convenient and conveniently suspicious. Since Trump is guarded by secret service, conspiracies would arise saying they (under Bidens order, or a Harris power grab) killed him. It would be completely absurd given the circumstances and no reputable source would support it, but people would believe it anyway and Fox would push the story. Widely broadcast funerals for each of them.
Then nothing… The conspiracies would flow, but nothing much would change.