According to the Times, Durham's team suggested to others that they're looking at whether the investigators in the Russia probe flouted laws or policies -- and that they were comparing the FBI Russia probe to the Clinton Foundation investigation.
The Times noted that it's unclear if Durham's team was looking for similar violations in the FBI's Clinton Foundation investigation. The newspaper also said it was not clear whether the comparison between the two FBI investigations would weigh into the outcome of Durham's inquiry for Barr.
Former law enforcement officials declined to discuss the charity investigation with Durham's team, because they viewed it as highly unusual, according to the Times.
A spokesman for Durham declined to comment to the Times.
The Clinton Foundation told the Times in a statement that it has been "regularly been subjected to baseless, politically motivated allegations, and time after time these allegations have been proven false."
They sought to get permission to formally conduct investigations, including the ability to subpoena records, causing tensions within the bureau and the Justice Department, CNN previously reported.
Justice officials declined to give the authorization for overt investigative techniques, citing a lack of sufficient evidence and concerns about the close proximity to the election, CNN reported at the time.
The Times reported that the charity was served in 2018 with a grand jury subpoena for foundation records and compiled.
Congressional Democrats have raised concerns over Durham's investigation, questioning whether it's being misused for political purposes.