Chiesa was involved in both Liverpool goals for their 2-1 triumph.
Slot said afterwards: "I think what you want to see. I can accept completely that a team that plays for the first time together, players that haven’t played for a long time, that they don’t play as a team perfectly. But what I always want to see is players that try and work hard.
"So I said at half-time, for me it is completely not a coincidence that Federico picked the ball and assisted on the first (goal) because he was the one, in my opinion, that was most involved in the game, tried the most, worked the hardest.
"And then it wasn’t a coincidence again that he was the man that made a deep run, great ball by Robbo (Andy Robertson), by the way – who also has won so much at this club and also understands how to play this game: not underestimate it, just always be ready to play.
"That’s also the way to get yourself either back in the team or get as much playing minutes as you want. That’s why I was happy with a few individual performances but far from happy with a few other individual performances.