That next league game - Swansea face Wolves in an FA Cup third-round replay at the Liberty Stadium on Wednesday evening - comes a week on Monday when Liverpool head for south Wales, although having won one and drawn two of Carvalhal's first four at the helm, Olsson believes a corner has been turned.
Newcastle pressed for a victor without creating many chances to find to it, and Swansea would have stolen the points had Wilfried Bony not seen a goal-bound effort cleared with Darlow stranded, the draw making it just one defeat in four in all competitions for Carvalhal, a run that will provide little solace for the Portuguese given the team's predicament.
The Swans made the long trip up to Tyneside for what many would believe to be their most important game of the season thus far, but were very much under the quash for the majority of the clash.
The Swans had a decent shout for a spot kick after Mo Diame appeared to move his arm in the direction of a goalbound effort in the first half of the contest at St. James' Park. "Against Tottenham [at home] we had no points but we played well and deserve more".
Newcastle was left to settle for a point that will likely increase the Spanish manager's exasperation at a lack of transfer activity and delays in completing a long-expected takeover.
If there was frustration in the away dressing room, there was too among the home contingent with Newcastle acutely aware of an opportunity missed.
"Usually teams in our position have these type of decisions not go in our favour, I don't know why".
"I am absolutely sure that would have been a red card and a penalty, absolutely sure. Now, it is just a case of doing what we have to do".
"But we have to make the substitutions and that is it".