(CNN) Senate Majority Leader Mitch McConnell gave a preview of how a possible impeachment trial in the chamber would be conducted in a closed-door lunch with Republican senators on Wednesday, answering questions about the rules guiding the proceedings and speculating that it will be over by Christmas.

McConnell prepared his colleagues on what's to come as the House investigates allegations that President Donald Trump abused his power in asking a Ukrainian leader to interfere in the 2020 presidential election.

McConnell said that the trial would start in the early afternoon each day, six days a week, with Chief Justice John Roberts presiding over the Senate. He said that the House could pass articles of impeachment by Thanksgiving and the Senate could then finish its trial by Christmas, according to a Republican present. McConnell's office declined to provide a readout of the meeting.

"One of the hypotheticals is we get these before Thanksgiving break," said Sen. Kevin Cramer, a North Dakota Republican. "There's great motivation to get this done by Christmas."

McConnell also said Wednesday that senators would not be allowed to kibitz on the floor per usual -- and warned that they could be kicked out if they do, according to a senator who attended the lunch.

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