This doesn’t matter, it is still open to legal challenge and let the higher court decide whether court calendars overrule someone’s constitutional rights to due process.
That is their job, to determine if a lower court erred. You can err in good faith, and still have it be an error that results in the overturning of a previous judgement. It just depends on what the higher court feels the totality of the circumstances were.
ETA: you can even make errors that nobody would have ever thought were an error until someone challenges it persuasively in a higher court. Appellate law is very rarely about the issue on its face and much more often about underlying principles, precedent, context, and the “intent” of what a decision was supposed to accomplish.