Well, it seems that while we were in Sydney, there was a case or two of Covid-19. We’re glad that we obeyed all the rules. We were careful to scan in to venues that required it. We thought scanning in to venues seemed to be taken more seriously in Sydney than in Melbourne, although the reverse seemed to apply to masks: while we there, many fewer masks were worn on public transport in Sydney than in Melbourne.
Things in Sydney apparently changed after we left. Seems we had our break at the right time.
We followed the procedures and applied for an “entry permit” when we returned to Victoria. Consequently when the new case was reported in Sydney, we did indeed receive a text message alerting us to the fact and directing our attention to the “hot spots” that had been identified in Sydney. So in that sense, the system worked.
I checked the hot spots, and although we had come close to one, it was on a different day to the day the location was “hot”. If we had been in the area and made a different decision at the wrong time, we would have had to isolate and get tested. Sigh of relief!