Rangers had hosted Celtic the previous Sunday in their 2-2 Scottish Premiership draw, when away fans made up around 2,500 of the 50,000 crowd.
Danny Rohl’s side are due to visit the 60,000-seater Celtic Park once more in the league this season and when the last time the sides met at Celtic Park in January, approaching 2,400 Rangers supporters attended.
Celtic’s allocation on Sunday was akin to visiting crowds at Ibrox derbies during O’Neill’s first spell managing in Glasgow from 2000-05, when he won seven trophies with the club, including three league titles.
“I would love if there was a serious consideration to be looking at these particular things, what happened, what could have been avoided, but I honestly think that in terms of atmosphere, there was nothing like it,” added O’Neill.
“And I’m talking about going there to a hostile atmosphere at Ibrox, where you actually, perversely, get some sort of intoxicated joy from it. Joy might be too strong a word, but it really was amazing.
“People are going to look at it and say 7,000 people at Ibrox or Celtic Park just cannot be policed.
“I don’t know the answer, but I still think something would be seriously lost again if that atmosphere throughout the game is anything to go by.”
