In-flight is quite risky: long-haul flights have much more covid transmission than short flights, which should not happen if transmission only occurred during takeoff and landing.
Interesting, although it's worth noting that the study specifically calls out that “Third, we cannot exclude other risks in air travel beyond in-flight risks, e.g., queuing for security or customs or boarding the plane, as well as the waiting time on the runway or transfers to terminals in public buses”.
(To the people who downvoted that comment: shame on you)
(To the people who downvoted that comment: shame on you)