Light on the science, High on sales talk. Unless I seriously misunderstand things, the "faster" end to end travel time has no real impact on the jeglag problem. It's only 2-3 hours and the "sleep management" aspects could be applied to existing routing anyway.

(25y international travel for work so I speak from personal experience on the kangaroo route(s) in all classes)

> "When you have a passenger for essentially a whole day, it really does drive a whole set of new decisions," he said.

This seems weird when we have ferry, train or bus rides that can take days or even weeks. I get that planes are special in their ability to cross timezones and so warp the usual day-night rythm. But that doesn't seem enough to make this a completely novel problem. Is there something else that makes this unique?