Menzies have accepted that it was their fault, and they are obviously going to take some flak, and will probably have take some sort of financial penalty.
The Airlines involved will say "It`s not our fault, blame the handler", as will the Airport operator,but the Airlines have been driving the handling fees downward for the last 15 years, wanting better service on very thin margins for the handler.
At some point the Airlines and the Airport operators are going to have to accept that unless they are willing to pay a fair price for their outsourced operations, this sort of problem will become more frequent.
I was subject to a similar delay at 12.30am last summer at LGW. Gatwick Airport were quick to squarely lay the blame at the feet of the handler on their public address announcements in the baggage hall. Let`s give the staff, who obviously worked hard with short numbers, some credit here, as well as Menzies senior Management who have at least accepted most of the blame.