Ask HN: Use “flying trains” as a way to create “direct flights” via midair hubs?

The idea is to have direct flights using "flying trains" formed by having several airliners departing from different cities connect nose to tail in midair to form a transient midair hub and allowing passengers to change planes to the one that will be landing at their desired city.

Is this feasible? Can it replace airline hubs and produce many more direct flights?