Questione giuridica chiave
Whether the insured person's relevant incapacity for work under Art. 23 lit. a BVG began during the appellant's insurance period
Decisione estratta
The relevant incapacity more likely began during the insurance period with the Auffangeinrichtung, at the latest by the end of February 2004.
Motivazione estratta
The cantonal findings based on retrospective medical opinions and lay evidence were not manifestly wrong. The progressive disease course and work restrictions supported an incapacity of at least 20% during the insurance period; earlier symptoms did not necessarily mean earlier incapacity.