November 13, 2008
"The Vice President-elect and Dr. Jill Biden met with Vice President Cheney and his wife Lynne at the Naval Observatory this evening. The Bidens thank the Cheneys for welcoming them into their home and for their gracious hospitality," said spokesperson for the Vice President-elect Elizabeth Alexander.
Barack Obama, Statement on Vice President-Elect Biden Meeting with Vice President Cheney Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/285179