Kernrechtsfrage
Whether the federal appeal was admissible in view of Article 83(c) LTF and the unity-of-procedure principle
Extrahierter Entscheid
The court left the question open because the appeal failed for lack of sufficient constitutional reasoning in any event.
Extrahierte Begründung
The challenge concerned only the timeliness ruling and procedural issues; such constitutional complaints can in principle be raised either by ordinary or subsidiary constitutional appeal.