Defense witness David Miller, an expert in insurance underwriting, testified that the Zurich insurance company worked with the Trump Organization largely to protect its relationship with their broker, AON Risk Solutions.

"The relationship with AON was very important, and keeping business intact was very important," Miller said about Zurich, which he said made a "business decision" to insure the Trump Organization's properties.

The testimony appears to be a move to weaken the New York attorney general's allegation that the Trump Organization used their inflated financial statements to get progressively favorable surety terms.

Judge Arthur Engoron was skeptical to qualify Miller as an expert before he relented to the defense's request.

"I don't see why you're an expert in what was just said," Engoron said after Miller spent 20 minutes listing his professional experience.

Both Engoron and state attorney Andrew Amer, who called the testimony a "waste of time," criticized Miller's ability to testify about the decisions made by Zurich and AON.

The defense’s case will likely conclude one week ahead of schedule, according to defense attorney Clifford Robert.

Based on the remaining witnesses, the defense team is now planning to rest its case by Dec. 8.

Once the defense rests its case, the New York attorney general has an opportunity to present a rebuttal case, followed by closing arguments from both sides.

Week 8 of Donald Trump's fraud trial resumes this morning with the defense's sixth expert witnesses.

Apart from the testimony of Donald Trump Jr., the defense's case last week largely relied on multiple experts who supported the claim that asset valuation is more of an art than a science.

Similar to the state's lone expert witness, who was paid $350,000 for his testimony, Trump's expert witnesses during the first week of the defense's case were paid a hefty fee for testifying -- while others testified as a professional courtesy to Trump. Expert witness Gary Giulietti acknowledged his personal friendship with the former president, while Steven Witkoff said he had donated over $2 million to Trump's presidential campaign.

New York Attorney General Letitia James noted those connections in a social media post.

"Several of these experts are longtime friends and golf buddies of Donald Trump. One had donated millions of dollars to Donald Trump's campaign and his son even got married at Mar-a-Lago," she said.

With his limited gag order temporarily lifted on Thursday, Trump is continuing to rail against his civil fraud trial on social media, calling for the prosecution of New York Attorney General Letitia James, Judge Arthur Engoron, and Engoron's law clerk.

Describing the case as a "horribly handled persecution of a political opponent," Trump alleged that Engoron himself committed fraud by undervaluing his assets in his pretrial ruling, and that his clerk and James were complicit in the case.

"The World is watching this illegal Witch Hunt," Trump wrote.

Describing Engoron's clerk as a "co-judge" and "highly partisan," Trump's posts over the weekend were the second and third time the former president took aim at the clerk since an appeals court temporarily lifted the gag order preventing him from attacking Engoron's staff. In both posts, Trump explicitly mentioned the clerk by name.

Engoron on Friday denied Trump's request for a mistrial, which alleged bias on the part of the the judge, writing in his ruling, "As I have made clear over the course of this trial, my rulings are mine, and mine alone. There is absolutely no 'co-judging' at play."

Former President Donald Trump's plan to deliver part of his closing argument Thursday, as reported yesterday by ABC News, is now in doubt after he failed to meet a deadline to agree to limitations imposed by Judge Arthur Engoron.

According an email exchange between Engonon and defense counsel that was posted to the public docket Wednesday, Engoron said that Trump would have to follow the case's limited gag order, and that he would not be allowed to "impugn" the New York attorney general or her staff -- limitations that Trump attorney Chris Kise rejected, calling them "untenable."

"The limitations I am imposing, in my absolute discretion, are not subject to further debate. Take it or leave it," Engoron replied on Jan. 9, according to the email thread.

When Trump's lawyers missed the first deadline set by Engoron, the judge determined that Trump could not testify. Kise then responded that he did not see the deadline and requested that the closing arguments be postponed because of the death of Melania Trump's mother on Tuesday.

"I am sad to advise the Court that Mrs. Trump's mother passed away this evening. Because of the challenges presented by this deeply personal family matter, President Trump has asked that I request the Court postpone the date for closing argument," Kise wrote yesterday.

Engoron promptly denied the request and said the closings would continue as planned.

"On balance, going forward makes the most sense. Please tell Mr. Trump that I am sorry," Engoron wrote.

Kise informed Engoron that Trump still planned to attend the closings and speak.

"Despite the fact that his Mother-in Law, who he was very close to, passed away late last night, President Trump will be speaking tomorrow," Kise said in an email this morning.

When Engoron asked for assurance that Trump agreed to his rules, Kise pushed back, writing, "You are not allowing President Trump, who has been wrongfully demeaned and belittled by an out of control, politically motivated Attorney General, to speak about the things that must be spoken about."

"I won't debate this yet again. Take it or leave it. Now or never. You have until noon, seven minutes from now. I WILL NOT GRANT ANY FURTHER EXTENSIONS," Engoron replied at 11:54 a.m.

After Kise failed to respond, Engoron emailed him at 12:12 p.m. that he assumed Trump would not be speaking and that their email exchange would be posted to the court's public docket.

Responding to the development, Trump's legal spokesperson, Alina Habba, said in a statement to ABC News: "Is anyone surprised anymore?"