Key legal question
Whether the cantonal suspension of the colocation proceedings was lawful despite the pending Belgian case.
Extracted holding
The suspension was unlawful; the Belgian judgment was not binding on the Swiss colocation judge on the merits of the bankruptcy claim, and the lengthy stay violated the right to a decision within a reasonable time.
Extracted reasoning
Foreign pending proceedings do not displace the Swiss authorities' exclusive competence in Swiss insolvency colocation matters. While a stay can exceptionally be ordered for case management, the cantonal courts relied on an incorrect premise of binding effect and overestimated the practical justification for waiting, especially given the delay and the need to decide Swiss insolvency-law objections first.