David, I don't think they met. The incident you recall was not at Peenemunde (in the Soviet sector) but at Cuxhaven, during Operation Backfire 1945 Oct 3 to 15. Korolev had to watch from outside the gates. I don't think Von Braun was there, but the account in Ordway and Sharpe implies that Debus may have been. - Jonathan McDowell