Instead, the Blues manager said that it was all down to the team's masseur, a Scot by the name of Billy McCulloch.
McCulloch gave the team talk to the Chelsea players rather than Mourinho, he claimed.
As reported from the post-match press conference (via Sky Sports):
I didn't speak to the team—I am serious! It was Billy the masseur who spoke to them.
He was screaming so much in his Scottish accent, going grrr, grrr, grrr, that I didn't understand, but the players were clapping so they must have got it!
The last time I spoke to them was at lunchtime. It was Billy's team talk, I'm telling you.
Billy was fantastic, I didn't understand, but it looks like the players did.
Chelsea were praised for their display, which stopped City's perfect run of 11 home wins in the Premier League this season.
Now, in the final third of the campaign, just two points separate the top three teams—Arsenal, Manchester City and Chelsea.
So what next? Arsene Wenger to hand over team talk responsibilities to the club physio? Cardiff chairman Vincent Tan to start picking the team? Actually, don't answer that.