Unfortunately I am not senior enough to post links or image, so unfortunately cant post the direct links.
But basically, in the main Cathay Pacific homepage (the first landing page for Cathay Pacific) where you see the heading page of " The latest COVID 19 Information and Updates", there are two dots. The first goes into your link (you are correct, it is not listed on that page), However if you click on the second dot, it will show Hong Kong Transit Information - Find Out More..
Transiting through Hong Kong
Transit requirements
With effect from 8 December 2021, all passengers travelling from overseas places and Taiwan for
transit at Hong Kong, are required to present a medical certificate indicating a negative COVID-19 test result, the test must be taken within 72 hours of the scheduled departure time of the flight to Hong Kong.
Passengers will be able to transit through Hong Kong if:
- Their itinerary is contained in a single booking;
- They meet the entry requirements of their final destination;
- They have their baggage checked through to the final destination;
- They have been issued their onward boarding pass(es) from their origin; and
- The connection time between flights is within 24 hours
Transit restrictions- Passengers starting their journey in the Chinese Mainland are able to transit Hong Kong International Airport provided they meet the above requirements
- Transiting to destinations in the Chinese Mainland remains unavailable
- Hong Kong International Airport Skypier Sea-to-Air ferry service (Greater Bay Area to Hong Kong) will gradually resume from 28 October 2020, but Air-to-Sea ferry service will remain suspended