The organisers of the fireworks display at Waikato Stadium promised to tone down the explosives before the Chiefs lit a match under the Crusaders in winning their semifinal.
The boom and flash of the pyrotechnics had shocked a few present in the lead up to the last game between New Zealand's best teams when they last met in Hamilton on July 6.
On Friday night the blast of flame before kickoff still put out plenty of heat - it could be felt through the window of the media box - and the Chiefs soon carried on a theme in front of a sellout crowd.
They had gone into the match having failed to dominate in their two previous outings - defeats to the Crusaders and Hurricanes away but the mental and physical shift demanded by captain Craig Clarke worked.
Their aggression against the seven-time champions was a key factor in the 20-17 victory. It got out of hand at times - No8 Kane Thompson traded punches with Crusaders prop Wyatt Crockett (an incident put on report by referee Craig Joubert), halfback Tawera Kerr-Barlow was penalised for stomping, and props Sona Taumalolo and Ben Tameifuna did some silly things early on, but the intent served them well.