Sgt. Ker Yang, the Minneapolis police official in charge of crisis-intervention training, and use-of-force instructor Lt. Johnny Mercil became the latest department members to testify as part of an effort by prosecutors to demolish the argument that Chauvin was doing what he was trained to do when he put his knee on George Floyd's neck last May.
With the trial in its second week, jurors have now heard from more than 20 witnesses, including four police training experts on Tuesday.
Officer Nicole Mackenzie, the medical support coordinator with the Minneapolis Police Department, was the third witness called on Tuesday afternoon in the trial of Derek Chauvin.
As police officers are rarely convicted or charged at all for deaths that occur in custody, the verdict in this trial is being seen as an indication of how the USA legal system will treat such cases in future.
The statute, she said, is so broad that "any of the activities that Mr. Hall would be testifying about throughout that day and including before police arrived on May 25, 2020, could potentially incriminate him in that charge, not to mention drug sales and drug use".
"We tell officers to stay away from the neck when possible", he said, adding that officers are told to place body weight on a suspect's shoulders when reasonable.
Records show Chauvin also underwent training in the use of force in 2018.
Kneeling on people's necks is not what officers are taught, Derek Chauvin's former boss told the jury.
Mr Mercil told the court that Mr Chauvin should have recognised that it was "time to de-escalate the [level of] force" once Mr Floyd fell unconscious, and that Mr Floyd should have been moved into a different position to avoid asphyxiation.
Earlier Monday, the emergency room doctor who pronounced Floyd dead after trying to resuscitate him testified that he theorized at the time that Floyd's heart most likely stopped because he didn't get enough oxygen.
He also said officers were taught that restraint is considered force and that they must use the least force required because "it's safer and better for everybody involved".
Mr. Nelson, who has repeatedly portrayed the crowd of onlookers as an obstacle to the treatment of Mr. Floyd, asked her if an unruly crowd might make it hard for an officer to assess whether a person was in medical distress and even make it unsafe to begin medical treatment.
Arradondo, the city's first Black chief, fired Chauvin and three other officers the day after Floyd's death.
Prosecutors argue Chauvin, who is White, killed Floyd by kneeling on the 46-year-old Black man's neck for 9 minutes, 29 seconds as he lay face-down in handcuffs outside a corner market.
Mr Chauvin's lawyer Eric Nelson has fought against that notion by emphasising that officers have to consider different factors while using force, such as potential threats from a nearby crowd.
One of their key witnesses, police chief Medaria Arradondo, testified on Monday that Mr Chauvin violated policies regarding the use of force.
Mr Nelson granted that, occasionally, an officer might "look bad" while restraining a suspect, but the officer could still be following the law, and the policies, on the use of force.
"Your honor at this point in time, Mr. Hall has no immunity", said Adrienne Cousins, the public defender for Morries Hall, who spoke in a Tuesday morning hearing without the jury present.
Stiger said that after reviewing video of the arrest, "my opinion was that the force was excessive".
Nelson asked if it can be confused with effective breathing.
"There's really a very small narrow topic that might be permissible", judge Peter Cahill said as Hall's lawyers argued that it was impossible for him to be cross-examined without incriminating himself.