There are some managers who would have taken Saturday's result at Ibrox with a shrug of a shoulders given that the league has been won and the team are still 10 points better off than the one that cuffed them 3-0.
But if we've learned anything from the last 20-odd months, it's that Ange Postecoglou is not that kind of guy. Make no mistake, Celtic's manager won't disregard the result or his team's performance in Govan at the weekend.
He might not have been ranting, raving or kicking tea cups around the visitors' dressing room. In fact, it's unlikely that he'd have shown signs of being visibly angry.
But behind the cold hard stare and the stubble on his chin and cheeks, there will have been an uncompromisingly hard assessment of the facts that might add up to bad news for some of those at Celtic Park who have been happy to hang onto the coat-tails of the stalwarts who have driven the champions to the brink of another Treble.