He didn't play another three minutes. There were two minutes between Barkley's goal and the restart, and another minute after their third goalWas a soft goal, but had the pitch encroachment not happened the ref might not have played another three minutes. The allowance for a goal is 30 seconds, so maybe at best an additional minute.
Hey-ho, it's done now... move on and beating Palace on Monday is the all-important matter.
when there wasn't any football played. The pitch encroachment just held the game up for two minutes. Extra time went for five minutes and thirty-three seconds.
I agree with your last bit - yes, it's done now.