Questione giuridica chiave
Whether the Federal Tribunal could hear an appeal against the cantonal remand decision on evidence-taking.
Decisione estratta
The decision was incidental and the appellants failed to show a legally irreparable harm or the conditions for immediate admissibility under Art. 93 LTF.
Motivazione estratta
A prolongation of proceedings and evidentiary rulings generally do not cause irreparable legal harm; such matters can normally be reviewed together with the final decision.