I'm 100 % with you. On that level it is impossible and would be absolutely nonprofessional. So I never believed Jon.
And even 2013 he said they never rehearse but started doing it for this tour.
Althoug he already admitted rehearsing for the Have A Nice Day tour back in 2005 when they went on a military base for doing so and even played a small show for the soldiers at the end of it...