Unfortunately, they only use call sign “Venus” when there are no big wigs on board. VIPs get call sign “SAM 28000” or “SAM 29000” (Special Air Mission, the number is the tail number of the plane). Low-level VIPs get call sign “Executive [tail number]”.
Unfortunately there is no way I can think of to establish if that communication supposedly between the flight control and the aircraft identified by the call sign Venus actually related to the subject flight we are discussing.
See comment #87 - you may be able to help establish if there is any connection.
Communication Source: