Questione giuridica chiave
Whether the appeal against the cantonal cassation decision was admissible despite being directed against an incidental decision.
Decisione estratta
The challenged decision was incidental and did not cause irreparable harm or justify immediate final adjudication to avoid lengthy and costly evidence proceedings.
Motivazione estratta
Under Art. 93 LTF, an incidental decision is appealable only if one of the statutory conditions is met; neither condition was satisfied here, so the federal court could not enter into the merits.