The midfield duo are a week into their two-week spell with Los Rojiblancos and have been able to take in training sessions with some first team stars along the way.
"We're doing well over here," Duka told the Fire's official website. "It's been a great experience to come in and be a part of Atlético so far.
"We trained with David Villa and Arda Turan. We played small-sided and the games were pretty intense. We were part of the younger team with all the younger guys and actually did work and won a couple small-sided matches.
"It was a lot of fun to be near David Villa and so many of their good players."
And Pineda admitted that he was impressed by the technical ability of the La Liga outfit.
"They want their players to be involved with the ball as much as possible and not necessarily be so direct," added Pineda.
"I think that's a cool thing - you notice the players are so technical at all levels, even down to the U14s it's very impressive the way they carry themselves on the field."
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