boarding is a PITA. Counter staff usually does not follow the latest protocols or fully understand the "grey" areas.
When I came back in July, I had a POSITIVE PCR test + recover note + negative RAT test. My first connecting flight, the lady at the counter was confused and wanted to tell me to leave. The second flight, direct to HK, the CX crew had some goody goody counter staff and was "unsure" if my RAT test was "credible" as he has never seen the clinic name. Needless to say I was worried and ready to kick some ass if I was rejected boarding at the connecting terminal.
Most stressful and unpleasant travel experience in my life so far. I had to reschedule my flight and Q hotel because I could not fly for 2 weeks after I caught covid. Rescheduling flights and hotels during that time was a disaster, airlines are understaff and quarantine hotels were full AF.