To follow up with wiggy and KnotAPilot:
Even if the gent newer to this type may not have had that systems knowledge embedded in his brain deeply enough (possibly having been through a "drinking with a fire hose" conversion course), his training pilot with much more experience on type would certainly be aware of that feature, would he not? And being the training pilot, would he not be aware of how that systems feature had to be accounted for when operating on the line?
Guessing here, and following what appears to be a productive line of HF and CRM thought ...