Trump been sworn in as a witness for a hearing Judge Engoron is holding on whether he violated the limited gag order Engoron imposed earlier in the trial.

The former president then took the stand.

After Judge Engoron raised concerns that Trump had possibly violated the limited gag order the judge had imposed during the trial, Trump and his lawyers remained inside the courtroom at the start of the lunch break for a 25-minute conference that was sealed to the press.

Afterward, when asked by reporters about the private conference, Trump responded, "I can't tell you."

Trump otherwise praised his lawyer's cross examination of Michael Cohen, who admitted he lied under oath on multiple occasions.

"That was a Perry Mason moment," Trump said.

Defense attorney Alina Habba's cross-examination of former Trump attorney Michael Cohen featured frequent objections, cross talk and nonresponsive or argumentative answers that often breached customary courtroom decorum.

"You didn't ask me a yes-or-no question," Cohen scolded Habba at one point. "Yes I did," Habba shot back.

Cohen at times resisted answering questions, either objecting to them or insisting he did not understand them, while Habba paced the floor, blaring her questions into a hand-held microphone as Trump observed from the defense table.

"President Trump makes you relevant," Habba chastised Cohen. "If you didn't work for President Trump you wouldn't make most of your income today."

Cohen eventually conceded that he makes his living because of his prior relationship with Trump.

"Outside of your two podcasts, your merchandise and your books, is there any other form of income in your life?" Habba asked. "No," Cohen answered.

Habba's cross-examination concluded with a pointed question meant to question Cohen's motive for cooperating with the attorney general's investigation.

"Did you ever ask President Trump to pardon you while he was in the White House?" Habba asked.

"No," Cohen said.

"And he didn't pardon you?" she asked.

"No," Cohen replied.

After the first break of the day, Judge Engoron threatened to penalize Trump after what Engoron said was a "dangerous disobeyal" of the gag order he imposed prohibiting comments about his staff.

"I am very protective of my staff, as I should be. I don't want anybody killed," said Engoron, who handed down the limited gag order earlier in the trial after Trump made a social media post about his clerk.

Citing Associated Press reporting, Engoron expressed concern that Trump made a comment in the hallway about "a person who is much more partisan sitting alongside him."

Since Engoron's clerk usually sits to his right, the judge interpreted Trump's comment as referring to her.

"It is very easy for the public or anyone to know who this person is," Engoron said.

Trump's attorney Chris Kise said there was a misunderstanding, clarifying that Trump was referring to Michael Cohen, who has been sitting in the witness stand to Engoron's left. Kise attested that Trump confirmed to him that he was referring to Cohen.

"That's the way I read the statement," Kise said. "He is tired of listening to what he is hearing. It is very partisan."

Engoron did not impose any penalty and took Kise's explanation "under advisement."

Donald Trump Jr. struggled to answer questions when pressed about why former Trump Organization CFO Allen Weisselberg departed the family's firm.

"Because some legal issues he got himself into," Trump Jr. said, declining to offer specifics about Weisselberg's guilty plea on tax evasion charges last year.

Previously giving lengthy answers to questions about his background and even smiling with the judge, Trump Jr. appeared tense on the witness stand as he answered questions about Weisselberg.

"The specific event was he was indicted," Trump Jr. said.

He added that when began working for the Trump Organization as an executive vice president in the 2010s, Weisselberg outranked him. Trump Jr. would seek Weisselberg's approval for certain business decisions such as refinancing loans.

"Who is above you in your role as an executive vice president in the Trump Organization?" state attorney Colleen Faherty asked.

"Obviously I would have reported to my father in that period of time … people like Allen Weisselberg would have still been senior to me," Trump Jr. said of that time period.

Trump Jr. said he gained more responsibility in 2016 when his father became president and he was named a trustee of his father's revocable trust. He said that he, Weisselberg and his brother Eric Trump became a kind of triumvirate running the Trump Organization.

"We stopped reporting to my father on decisions involving the business," Trump Jr. said.

That relationship broke down once Weisselberg got himself into "legal issues," Trump Jr. said. He testified that he could not recall the circumstances of Weisselberg's exit, including the multimillion-dollar severance deal that Weisselberg received, which Weisselberg faced questions about during his own testimony earlier this month.

"I have no knowledge of the specifics of how it happened. He is no longer working at the Trump Organization," Trump Jr. said of the former CFO.