There are 18 77W with F6 in the current CX fleet, 6 parked in ASP, and 3 parked in HKG/others.
B-KQW has no schedule/historical fleet but is not marked as parked.

There are 8 aircraft with F that is in operation for LAX/LHR/CDG/HND.
IIRC, HND is a day flight so there is no affection for roasting.

Seems CX has maximized planes with F for operation. If they need to expand F service (someone said JFK F is coming back), they might need to pull some back in ASP