I sat in the PrimeClass lounge for 8 hours in August 2021, self-connecting from a SPU-ZAG Croatia Airlines flight to BA's ZAG-LHR service. Given that we were still coming out of the pandemic, SPU-LHR (never mind to the US) was extremely limited.

My buddy also found Karlovacko extremely drinkable during our time in the lounge and proceeded to puke in the Galleries lounge during our layover at LHR! Good memories...