Company B failed at onboarding and level-setting. They didn't properly communicate what they wanted from you, didn't know that what they wanted wasn't a good f

Company B failed at onboarding and level-setting. They didn't properly communicate what they wanted from you, didn't know that what they wanted wasn't a good fit and didn't know what training would be needed to fix it, and probably didn't even really understand what they wanted. That sort of thing will be less common in companies with training and mentorship programs for new managers. Which I'd expect to correlate with startup vs bigco, but not be an exact match.