Defensively, the Blues were unrecognisable from last week; from the team they have been for much of the season. For all the improvements that have been made since Tana Umaga arrived as coach, the one area that's been slow to evolve is their defensive work.
Rebuilding their structures and confidence is a long-haul job, as it was all fairly chaotic last year. The players are having to not only learn a new system, they are also having to learn to trust one another and finally there were signs that it's all coming together.
The Crusaders, by the end of the first half, had been forced to regress to their old ways of attacking side to side. When they have been at their best this season, they have been direct and decisive.
They wanted to be like that at Eden Park, but they couldn't get on the front foot.
They couldn't punch forward the way they wanted and, when they went wide, couldn't force the Blues to make mistakes.
Because the space didn't open up, the Crusaders resorted to just drifting from one side of the field to the other and inevitably became frustrated with their lack of progress and took unnecessary risks to try to break the pattern.
No one better epitomised the improved defensive effort than giant prop Charlie Faumuina who, with quite incredible athleticism, power and agility, scurried from a ruck to hit Johnny McNicholl in a thunderous full-on tackle. The little wing went down hard, took a full minute to get up and then came off with a damaged shoulder.
It was one of those moments that made both sides wonder whether a surprise was in the air. The Crusaders, who had been turning down kickable penalties, were suddenly pointing at the posts every chance they got and the Blues had renewed energy and cohesion.
It was a dog fight from about 30 minutes in - one of those games where it was obvious early that there wouldn't be much to separate the teams.
And so it proved. Kieron Fonotia was able to slip through an Ihaia West tackle with 17 minutes remaining and then pop his pass to the supporting Andy Ellis.
Once they went ahead, the Crusaders never looked back.
Blues 21 (I. West, G. Moala tries; I. West con, 3 pens) Crusaders 26 (N. Nadolo, A. Ellis tries; R. Mo'unga 2 cons, 4 pens). Halftime: 15-10.