(CNN) - Paul Ryan's debate preparations have involved a core team of aides, improvised sessions on his plane, and mock debates in hotels all around the country.
But one thing Ryan did not do to prepare – seek advice from the only other Republican who has faced off against Joe Biden in a vice presidential debate: Sarah Palin.
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"You know I haven't," Ryan answered when asked in an exclusive interview if he had reached out to the former Alaska governor. "I don't really know her. I only met her once and that was about two years ago."
Asked if he would ask Palin's advice given the chance, Ryan said he would.
"Sure, sure, sure," he said.
As for Palin's now-famous inquiry on whether she could call Biden "Joe" ahead of their 2008 match-up, Ryan said he and his opponent were already on first name terms.
"I know him as Joe and he calls me Paul," the Wisconsin congressman said.
So will he call the vice president "Joe" during Thursday's debate?
"You know I haven't given it that much thought to be honest with you," Ryan said. "Probably not, unless he wants to make it casual. But we know each other. Actually, we've gotten along quite well over the years. I like Joe personally quite a bit I just disagree with his policies."
Those disagreements are certain to emerge at Thursday's debate in Danville, Kentucky. A source familiar with Ryan's debate preparations tells CNN that since the first presidential debate, they have intensified focus on lines President Barack Obama ignored during his first debate with GOP nominee Mitt Romney, including hitting Romney for his remarks on the 47%, and for his role at Bain Capital, the private equity firm he co-founded.
Since those sore spots for team Romney didn't come up at all during the first presidential debate – a point of dismay among many Democrats – Ryan sources believe Biden will attempt to make up for it on during their debate.
– Watch more from Dana Bash's interview with Paul Ryan at 4 and 6 p.m. ET on CNN's "The Situation Room with Wolf Blitzer."