My first reaction after the whistle went was that the second half was a bit of a shambles, but tbh looking back, I think that's a bit over the top. However I do think that pep got it a bit wrong in the second half.
Personally think another like 10-15mins of haaland after HT would of fully killed the game, but even if not, at least trying to actually score a goal in the 2nd half would of killed it off, just think it was a little complacent to try and play it out with a million passes, and they had chances to take advantage of that.
Ultimately it doesn't matter as we got the 3 points, but something just didn't sit right with me in that second half, especially from like 55mins on.