Key legal question
Whether the federal constitutional complaint was admissible against the cantonal chamber's decision on the supervision complaint.
Extracted holding
The decision was in principle challengeable because the Thurgau supervision complaint was treated as a formal legal remedy giving the complainant party status and a right to disposition.
Extracted reasoning
Although refusals in ordinary supervisory complaints are generally not appealable, the Thurgau system under § 71 VRG was construed as an extraordinary formal remedy requiring a direct legal interest, so the chamber's decision had dispositive character.