The Europa League quarterfinal remains evenly poised as Martim Fernandes' freak own goal canceled out William's opener for Porto in the first-leg.
Farioli said afterwards: "We are a bit frustrated as we could have had a two or three-goal advantage to take to Nottingham. Facing a side of this level, we dominated the game, so we have many good things to consider.
"We need to repeat the same performance with a better level of finishing. Today is mostly about this aspect. At some moments we had better pressure between the boxes, but we need to find space in a better way.
"We did our things the right way, and we created good chances. We weren't as consistent as we usually are in games.
"We barely conceded a shot on target, and I remember four or five good saves from Stefan Ortega."