Literally on last minute information SWISS ground staff urged us to take an antigen test, as our was expired by 30 minutes. Upon arrival at Viselio the technician swabbed our noses and took the tests.
The results were mailed to us as we made it back to the departure gate and arrived in time to board the plane.
Thanks to the cooperation and goodwill of Viselio we made it home - €90 per person well invested.