Sean Dyche felt Burnley may have felt the effects of their weekend win over Spurs as their unbeaten run in 2019 came to an end at Newcastle.
The Clarets were below par as Town scored twice in the first half to effectively wrap up a fourth straight home win.
And despite an improved second half display, Dyche was left scratching his head at a first defeat in nine games.
He said: “It’s a strange one to analyse. We certainly weren’t at the races in the first half and you can’t help but think back to Saturday’s result and all the euphoria that goes with beating one of the big six.
“If we’d had a free week, all that furore might have calmed down, but when you hit the big teams as we did on Saturday with a terrific performance and you have to go and do it all again a few days later… well, that’s what it looked like.
“At half time we reminded them of that, and in the second half I thought there was a response. We were a little more like our old selves.
“The energy came back and without being amazing we huffed and puffed and created one or two things. At least it looked a bit more like us.”
Burnley were dealt a blow n the build-up to the game, with influential midfielder Ashley Westwood sent home from the team’s hotel after suffering with illness.
Dyche explained: “Losing Westy this afternoon, after he’s been excellent, was a blow, but thankfully he rooms alone, so hopefully we have contained that.
“That was a factor, and also it was probably a game too far for Dwight. Don’t get me wrong, he might be ready again for Saturday, but it was a big ask for him and he couldn’t quite find that energy tonight.
“And collectively, we just couldn’t find that edge to our game that we play with tonight.
“Having said that, they’ve scored a ‘worldy’ and Tom (Heaton) hasn’t had too much else to do. We responded with two really good chances in the first half and if one goes in, you never know.
“But it’s hard to be too critical because the players have been outstanding in many appearances lately.
“I thought Charlie Taylor was good again tonight and it’s good to have Robbie (Brady) and Johann back and getting some minutes, because that’s going to be important going forward.
“So, underlying, there were some good things, but tonight was a reminder that if you are not on top of your performance, you don’t get anything.”