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.