https://www.smh.com.au/business/comp...27-p4z6l2.html
Putting this into context: Quantas is exploring it's options with ultra long-range flights. And: “The challenge for Airbus and Boeing is to do it with full passenger load and full freight load,” Mr Joyce said
So basically they're asking: is there something we can do with this space if we're unable to fill it with cargo. Not more pax, since that would be more weight, but the "do you have an area where people can walk? Do you have berths like on a train?" mentioned in the article doesn't sound that crazy. Maybe offer yoga classes to calm down the pax?