Transferred to 2F from 2G today, could use skypriority line at the center of the terminal, almost no wait time; transfer gate to gate about 20 minutes. Great! Then the bummer ... could not take an earlier flight despite gate still open at T-20 like in the past. They close flights now 40min early also for transfer pax w/o luggage, this was definitively not the case in the past and makes changeable tickets quite worthless as it was a big advantage to get on connections below MCT when your incoming flight was early.