Vice President Pence’s office on Wednesday flatly denied Ambassador to the European Union Gordon Sondland‘s testimony that the two had a conversation in Ukraine in which the latter raised concerns that aid had become linked to investigations sought by President Trump — the matter at the heart of the impeachment inquiry.

Pence Chief of Staff Marc Short said in a statement that the purported conversation between him and Sondland “never happened.”

“The vice president never had a conversation with Gordon Sondland about investigating the Bidens, Burisma, or the conditional release of financial aid to Ukraine based upon potential investigations,” Pence said in his statement. “Ambassador Gordon Sondland was never alone with Vice President Pence on the September 1 trip to Poland. This alleged discussion recalled by Ambassador Sondland never happened.”