Hibernian manager Tony Mowbray felt "youthful naivety" cost his side, as they threw away a lead in injury time.
"I thought the game summed us up so far this season," he said.
"We're exciting but on the other hand the youthful naivety is very evident, not just in the manner we conceded the goal but in our general play.
"You like to think the game was won at that point (O'Connor's goal five minutes from time) but how do you learn in football? Through experiences."