Question juridique clé
Whether the cantonal court had to recuse judge Z. because the judge was personally involved in another case involving appellant's counsel.
Solution extraite
No objective appearance of bias was established; the mere fact that the judge was a party in another case involving the appellant's lawyer did not require recusal.
Motifs extraits
A judge is not presumed partial solely because of unrelated litigation involving his own person and a lawyer appearing before him. Absent concrete elements showing hostility, similar issues, or a particular dependency, the objective appearance of prevention is not met.