I know for a fact (not rumour) that they did not win the tender that was run for the managing contractor and two other companies were shortlisted.
My quote is from a RAAF press release. Not sure you can get closer than that.
The Falcon 7X is the perfect aircraft with, as mentioned, three engine overwater and two engine ferry if required. It has very long legs and excellent short field performance for its class. The 7X is proven in this field too...
This also from RAAF:
New Dassault Falcon 7x Special Purpose Aircraft Arrive
16 April 2019
The first of the Royal Australian Air Force’s (RAAF) new Dassault Falcon 7X aircraft arrived in Canberra today.
The new aircraft, being leased by RAAF, replace the Bombardier CL604 Challengers and provide a larger passenger load, modern communication and increased range and endurance.
Wing Commander Jason Pont, Commanding Officer of 34 Squadron said the Falcon complements RAAF’s larger Boeing 737 Business Jets.
“The Falcon 7X is an advanced business jet designed and manufactured by Dassault Aviation,” Wing Commander Pont said.
“The jet has a standard crew of three (pilot, co-pilot and crew attendant) and can carry up to 14 passengers.
“With a maximum operating speed of Mach 0.9 and a range of up to 11,000 km, the aircraft can fly from Canberra to anywhere in the world with only one stop. Its ability to land at almost any airfield provides notable regional and remote airfield accessibility.”
The Falcon features a high-tech wing, an advanced ‘glass cockpit' with a heads-up display and an infrared enhanced vision system. It also has satellite communications to support Government business while airborne.
The aircraft will be operated by Number 34 Squadron as part of the Special Purpose Aircraft fleet, based at Defence Establishment Fairbairn in the Australian Capital Territory.
The fleet will continue to be maintained by Northrop Grumman.
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