Donald Trump does not have immunity in the trial for his attempts to overturn the vote in 2020, which culminated in the assault on the Capitol. The tycoon only has 'all the means of defense of any other defendant' in a criminal trial.
It is more than likely that Trump will now appeal to the supreme court, with the minimum objective of further delaying the start of the hearing. On Thursday, the Supreme Court will also hear the former president's appeal against being barred from running for office in Colorado based on the 14th Amendment.