Atwell ruled out a Wolves goal because of a possible foul that occurred off the ball.
"No, no qualms at all, I hope he is OK. A tough few days for him. I hope he is doing OK," O'Neil said post-game.
"I don't have any thoughts on the decision, I think it is really important I focus fully on my team and Wolves.
"I have spent a lot of time this season answering questions around VAR and decisions and I don't have any thoughts, everyone else will see the incident and make their own decisions. My focus is fully on us.
"I have answered your questions around it so many times after so many games and all that goes out after the game is either me moaning or not moaning about decisions.
"It doesn't help anybody, let's let those guys figure out what is the correct decision and let me figure out how to get this team some more points between now and the end of the season."