We were sitting in the coaches box [against the Brumbies] and thinking that if we could win that arm wrestle it would be huge for us," Rennie said. "We had a chat to the leaders and it was really well controlled. The team was really calm and they knew what they needed to do."
The Chiefs are also well aware of what will be needed on Saturday. The set piece, an area of weakness against the Brumbies, will again be tested, with the Crusaders more than content to capitalise on any deficiency and suck the life out of the game.
That's not to say Todd Blackadder's side lack weapons elsewhere, though. Give the Crusaders enough possession and pay the price out wide, making ball security a big focus for the Chiefs.
"They're physical games, all the Kiwi games," Rennie said. "We need to be looking after our ball better than we have been in the last few weeks and build some pressure of our own."
The return of Sonny Bill Williams and Sam Cane will aid in that goal, after the All Black duo were late scratches last week. There could very well be changes elsewhere - the Chiefs, even when winning, have history of shuffling the pack - and Rennie knew no player would lack the desire to be involved.
"We're definitely up for it," he said. "We love playing the Crusaders, especially in Hamilton. We've got a lot of respect for them - obviously you only have to look at their playing roster and coaching group to understand they're a high quality side.
"It brings the best out of both sides, theses games. Traditionally in Hamilton they've been arm wrestles, not a lot of tries, but a huge amount of intensity. I think it'll be similar."