Downs had to rely on the individual brilliance of talisman Lucas Ribeiro to riffle home what was eventually the winning goal in the first half.
Cardoso had warned in the build-up to the match that their visitors from Soweto would be no slouches on the day.
The Portuguese mentor believes Chiefs gave them a tactical battle
"As expected, and as we spoke maybe some of you were not in the pre-match conference, sometimes these matches are not the ones that in terms of the tactical side of the game are not the beautiful ones let's say but the other side, sometimes these matches are very, very interesting in the tactical side of the question, the strategical side of the game,” Cardoso said.
“Obviously, I speak about myself, I had hard work today not only to prepare the match because as you know we had 68 hours between the start of the previous one and the beginning of this one.
“So, a big challenge to prepare the match but also a big challenge to put in practice what we wanted."
While Chiefs had a little under two weeks to prepare for the fixture, Cardoso argued they were running on fumes at times following their trip back from Polokwane to face Sekhukhune United three days earlier.
"The fatigue was clear on our players today, absolutely clear. The way we played was conditioned a lot by the capacity that we could not sustain in terms of intensity of freshness because fatigue is not only physical, it comes here [mental],” he explained.
“So, then the decision making sometimes was not the best but hard times demand extreme measures and I told the team that as a team we could win the match and that's what we did."