It was the sixteenth minute of 15 minutes of added time. Fans had run on to the pitch a couple of times during the added time so apparently the ref had added an extra three minutes.
Then Argentina scored or at least people thought they had. Lots of people, including the TV commentators thought the ref blew for time immediately after - more fans run on the pitch. Meanwhile there's a VAR check going on, which disallows the goal. Lots of fans are on the pitch and the players get taken off by the ref.
Eventually the position gets clarified. The ref has suspended the match and taken the players off for safety reasons not because the match is over. The stadium gets emptied of fans and the match restarts two hours later. The ref's first action is to formally confirm the VAR decision and we're at 2-1 again. They play the last three minutes and it ends at 2-1.
I missed all this as I thought it was full-time 2-2 and switched channels. I heard the actual final score during another match a couple of hours later