Well I wouldn’t be surprised if QF did take the older ones to get a beachhead going until the new ones start arriving.
If QF didn’t get 320s, they’d be getting some Max’s very very cheap. Which would be very short sighted, as the 321 xlr would be a fantastic addition to the fleet.
The hopes may be pinned on the 797, but that really could just turn out to be a 767 max.