Are there currently any special COVID procedures for taking a domestic flight in Germany (Berlin to Frankfurt)? I would assume that, at the bare minimum, I would need to show my vaccination card when checking in at the airport. But beyond that, are there any other requirements such as a COVID test?
This flight will be after having spent 3 days in Berlin after flying in from the US, so I will have already have met the entry requirements for entering the country three days earlier.
Thanks!