Irish coach Joe Schmidt seized a stunning loss in 2013 in All Blacks to set up a training session that changed his team.
Ireland on Sunday in Dublin (NZT) in New Zealand, comfortably in the knowledge that they have the physical and mental readiness to expand this time at a distance.
The lesson learned hard five years ago when All Blacks changed the penalty in a five-minute game to put Ryan Crotty's last test run and the 24-25 test redirection of Aaron Cruden.
Luke Fitzgerald came with a bench to deal with an agonized goal for Ireland, but insists that the painful lesson set in motion a team under New Zealand coach Joey Schmidt, who saw that they continue at All Blacks and climbed to another place on the world rankings for New Zealand.
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He said that Schmidt, who in his third game, was in charge of Ireland for this loss in 2013, later adapted his practice around this dramatic late game.
"This game was a real turning point, even after Ireland trained," Fitzgerald told The Rugby podcast, The Independent.ie, as the interest is strengthened this weekend.
"Joe slightly changed the back of the page. The long last game was really long. We had this amazing workout and continued, which felt that the longest turn of the game was against you.
"This excerpt would be really, very difficult to do, and at the end of the training, we made three or four sets.
Prior to the clash between the best global players, All Blacks Assistant Ian Foster showed Ireland's praise.
"It was about four minutes and that [last play] It was five minutes. It was like we had to deal with five minutes, and replaced the curriculum from the back. It was very interesting. "
Ireland led 22-7 at half-time, but could not reach again and caught carelessly of All Blacks in the second half of the year.