It's left vague just when Bergman decided that Wigand was important not for what he might say about that report but about the industry as a whole.
No one is sure when Bergman decided Wigand mattered.
mnli hypothesis: No one is sure when Bergman decided Wigand mattered. premise: It's left vague just when Bergman decided that Wigand was important not for what he might say about that report but about the industry as a whole.