“There was more than 60,000 hours of combined flying experience present…..”
Correct, although grammatically dubious. Is the author suggesting that this is why the outcome was successful?
“…..more than 25,000 hours between them”
Again, correct. However, aircraft depressurize and descend every week without requiring “25,000” hours of experience to accomplish it.
QF pilots may have logged many hours of cruise flight but are not more experienced when measured against the wider airline community.