The Spaniard scored his second hat-trick of the season, while the Bosnian netted twice, in Wednesday's 6-0 hammering of West Ham in the first leg of the Capital One Cup semi-final
The duo have formed a potent alliance in the absence of Argentina international Sergio Aguero, who has been missing since mid-December with a calf injury.
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He told Sky Sports after the match: "People were able to see today, when we play together we feel comfortable. We try to find each other and we got the results.
"I'm very happy, obviously, but especially about the team. We got the victory so that's what matters in the end."
Dzeko was equally complimentary about the Spain international and was particularly impressed with Negredo's first goal, a controlled volley from Yaya Toure's pinpoint pass.
"The first goal was also spectacular from Alvaro," the Bosnian enthused. "The first goal is always important, then maybe we can open them up because they were defending with eight, nine players always.
"We still have to play away and this result will give us the confidence for the second leg."