Officials from other clubs said several of the Yankees' baseball personnel at the meetings had begun openly questioning whether they even wanted to make this trade if the Twins said yes.
"The more this goes on," said one AL executive, "the less they want to do it."
The Twins haven't budged since Friday. They wanted Kennedy then, and they still did on Monday.
Meanwhile, officials from other clubs said some Yankees baseball personnel at the meetings have continued to agonize over the inclusion of Hughes in their offer, out of fear Hughes could come back to haunt them for years. So clearly, the decision to include Hughes in the first place was far from unanimous.
Cashman admitted there's a fear that players he might trade could win Cy Young Awards for another team.
"I'm definitely fully invested in a lot of the young talent. You get attached to it," Cashman said, according to the AP.
And if the Yankees had any inclination whatsoever to waver on their stand a few days ago, the news Monday that Andy Pettitte had decided to return undoubtedly helped ease those concerns.
With Pettitte back, the Yankees can mount a respectable rotation, with or without Santana -- around Pettitte, Chien-Ming Wang, Hughes, Chamberlain, Kennedy and Mike Mussina. They also are expected to renew their efforts to trade for Oakland's Dan Haren.
But if the Red Sox wind up sweeping Santana out from under them -- and adding him to a rotation that already includes Josh Beckett, Curt Schilling and Daisuke Matsuzaka -- it will be fascinating to see if the Yankees feel the need to respond by reeling in another ace of their own.
"If the Red Sox get Santana," said an executive of one NL team that's grateful to be in the other league, "they might be the best team in the history of the frigging universe."
Jayson Stark is a senior writer for ESPN.com. His new book, "The Stark Truth: The Most Overrated and Underrated Players in Baseball History," has been published by Triumph Books and now is available in bookstores. Click here to order a copy. The Associated Press contributed to this report.