The new pair found it difficult on the back foot in Christchurch, as did all of the Blues' backs, but Umaga backed his selections which were criticised at the time and after the match, saying it was about giving his wider squad opportunities.
"What it shows is that people are passionate about knowing what we're doing here," he said of the fallout. "Obviously we were on a bit of a crest of a wave there. The pre-season was great and gave us confidence and we created ... some interest in what we were doing. Obviously the first game was great. You have to be able to back that up. We've got a big squad, we have to keep those guys interested and we believe that guys deserved opportunity and we want to keep doing that."
Asked what else he learned about the competition, rookie coach Umaga replied: "You don't win it in the first game and you definitely don't lose it in the second. Those are the two big things."
Umaga also knows a fair bit about the Hurricanes, having become one of Wellington's favourite sons while playing for the franchise for 12 years and he realises Chris Boyd's side, beaten finalists last year and looking at a three-loss start to their season, will be desperate.
"They're a side that can create opportunities from anything," Umaga said. "They have champions across the field... as we've learned, they're not losing by much - last week [against Highlanders] they improved - and they will come up this week looking to topple us over.
"We have to do the simple things well and back our structures. It's how we react to the pressure. That's the biggest learning for our players."
If nothing else, the Blues could take a leaf out of the Crusaders' book, the southerners reacting well to the first-round defeat to the Chiefs at home.
Umaga said: "Obviously they weren't too happy with their performance of the week before so they came out pretty motivated and we weren't able to withstand that. We'll be better for it, no doubt."