Not true.
IAG made an offer which was refused. They made a better offer which was accepted. However the buying process took a long time due to Brexit issue. As an offer was made, the company could no longer go ask for bank guarantees. At some point, the cash flow become so low that the actual bank loan could not be guaranteed anymore (it could but then the cost would dramatically increase). as such the company had to pull out of the deal to guarantee a safe continuity of the operation. End of December they decided to continue as stand alone due to this reason.
It does not mean that IAG is not anymore interested in Norwegian. if not IAG, could be LH who would gain a major hub in LGW which is still a major hub for IAG.
To be continued....