Kernrechtsfrage
Whether the appeal against the order on expert advance was admissible and sufficiently reasoned
Extrahierter Entscheid
The appeal was not admissible because the appellants did not meet the federal reasoning requirements and did not properly distinguish evidentiary costs from defect-repair advances.
Extrahierte Begründung
The arguments failed to engage with the lower court's reasoning and did not show a federal-law violation or arbitrariness. The court therefore did not need to decide definitively whether the interlocutory decision was otherwise appealable.