If they were coming from ZRH they would have been handed off by Wien or Bratislava and squawking a discrete code. It seems a bit extreme of the Hungarians, an EU country, to fire off a couple of supersonic fighters for what is clearly an airliner, especially when coming from continental Europe rather than, say, Ukraine/Russia?
Anyway guys listen out, and keep 121.5 turned up to an audible level too!