There is a link here to the original Gina Miller Ruling
https://www.whitecase.com/publications/article/brexit-update-article-50-challenge-great-repeal-bill-and-issues-around-timing
If you read it through it really does look as if we have a case! It's the same scenario as las time….only THIS time, parliament's intention was to leave the eu on 29th March by the triggering of Article 50