Not surprising, the large banks, which are eager to reach a settlement, have grown increasingly frustrated with Mr. Schneiderman. Bank officials recently discussed asking Mr. Donovan for help in changing the attorney general’s mind, according to a person briefed on those talks.

In an interview on Friday, Mr. Donovan defended his discussions with the attorney general, saying they were motivated by a desire to speed up help for troubled homeowners. But he said he had not spoken to bank officials or their representatives about trying to persuade Mr. Schneiderman to get on board with the deal.

“Eric and I agree on a tremendous amount here,” Mr. Donovan said. “The disagreement is around whether we should wait to settle and resolve the issues around the servicing practices for him — and potentially other A.G.’s and other federal agencies — to complete investigations on the securitization side. He might argue that he has more leverage that way, but our view is we have the immediate opportunity to help a huge number of borrowers to stay in their homes, to help their neighborhoods and the housing market.”

And Alisa Finelli, a spokeswoman for the Justice Department. said: “The Justice Department, along with our federal agency partners and state attorneys general, are committed to achieving a resolution that will hold servicers accountable for the harm they have done consumers and bring billions of dollars of relief to struggling homeowners — and bring relief swiftly because homeowners continue to suffer more each day that these issues are not resolved.”

Terms of the possible settlement under consideration center on foreclosure improprieties like so-called robo-signing and submitting apparently forged documents to the courts to speed up the process of removing troubled borrowers from homes. Negotiations on this deal have been led by Thomas J. Perrelli, associate attorney general of the United States, and Tom Miller, the attorney general of Iowa.