Serbia are still favourites to win the group with a final home game against Georgia on Monday, while Wales play third-placed Ireland in what looks like becoming a shoot-out to see who finishes as runners-up to claim a probable playoff spot.
Coleman watched his team-mates train at the Cardiff City Stadium on Sunday evening, having entered the final stages of recovery from the horrific double leg fracture he suffered against Wales in March.
Tom Lawrence sealed a 1-0 crucial win for Gareth-Bale-less Wales who continued to punch above their weight in their quest to reach the World Cup finals in Russian Federation. We have to do that - it's our strength."A point may be OK, but we'll go for three points".
"I don't know about revenge, but certainly the view among the players is that if Russian Federation was available to us and we could make it there, thoughts about Seamus would be very much in forefront of our minds", said O'Neill.
Coleman is a combination of motivator and tactician, with closeness to his players serving as a strength during a reign in which he has taken Wales to new heights.
Wales have a bit of a habit of performing these unusual pre-match setups.
"Every game that went past that we didn't win.well then the next one was a must-win and the next one is a must-win".
But if first place Serbia, who have 18 points, lose at home to Georgia both sides have the chance to secure an automatic spot.
After Tom Lawrence's victor on Friday, Wales ended the sequence of having not won a match without Bale since 2013, but Coleman played down the importance of that statistic.
He said: "I think there's a willingness on both sides (to stay on)".
"I've told the players there's nothing to be afraid of". We look at the opposition and we get a game plan and that changes depending on the opposition.
"He is on our way back but for us there won't be a mention of that".
When asked about the team photo during last year's European championships, Gareth Bale - who was absent from the game in Tbilisi - claims he has no idea what reporters meant.
The Wales defender Chris Gunter has also been at pains to stress that Wales are not a one-man team.