In the Magic Tournament Rules, the End-of-Match procedure says:
If the match time limit is reached before a winner is determined, the player whose turn it is finishes their turn and five additional turns are played in total.
In a Regular or Competitive REL tournament, does this mean the turn immediately ends (as though Sundial of the Infinite was activated), or does it mean the current player continues their turn through ordinary gameplay and draws it to a speedy conclusion so that the five extra turns can commence?
I've only been to a couple of pre-releases as far as tournament exposure goes, and I'm looking to better understand tournament procedure. I don't want to join a tournament and have an incorrect understanding of this situation cost me a game.