We're transferring through CPH in a few days, scheduled landing is just before noon. Our departure is at 18:10, so we have a bit over 6 hours between flights. I understand that the train to and from the airport is frequent and fast, but given the need to go through customs/immigration and then back through security, under current conditions is this enough time to safely visit for few hours? We're in business class on SK if that matters, e.g. might qualify for Fastrack or the equivalent if they have it. If we do have time, is there a left luggage facility where we could store our carrryons?