Dick, the 180 minutes in the article you quote is a planning issue only - planned at up to 180 mins from an appropriate diversion field BUT the pilot in command does not need to fly at the speeds which are used to calculate that 180 minute distance.
So conceivably any number of aircraft schlepping across the Pacific today could quite easily take longer than their diversion time (be it 60, 120, 180, 240, 330, 370 minutes)
I note the A350 has been certified for ETOPS 370 - 6hrs and 10 minutes - but these distances are necessarily derived using a specific speed schedule against the necessary time, so there is no obligation on the crew to fly the speeds used to calculate the ETOPS range rings