By "twice before" I meant 767 tankers.
Do you Airbus folks realize the A330MRTT was kludged together from stuff from the A300, A310, A320, and A330?
Not an Airbus folk, but no, I don't know that.
Because it isn't remotely true.
The MRTT is a reasonably straightforward development of the A330-200F, which in turn is a normal, commercially certificated freight derivative of the A330-200, which is a successful airliner. Yes, there are genes from the A300/320 in there, because that's the way Airbus grew the family, but it is in no way comparable to a 767-2C.