This did me no favours and resulted in the gate coming up on screen twice to different places which I ended up walking to.
CPH is a bigger airport than it seems. I am pretty certain I have seen all of it now.
Giving up and returning to the lounge I discovered that the flight had had a medical emergency and returned to base, and then had to get its original passengers to where they were going before getting to CPH and picking up passengers for PRG. Ah well, someone is definitely having a worse day than me.
Arrived about 2.5 hours late into Prague and although I had intentions of getting public transport to the hotel, in the end I just opted for the taxi.