Someone may read weather or a simple fact on the results page, or reformulate the query. These behaviors do not all imply the same purchase intent or satisfaction.
When clicks fall, compare impressions and CTR by query, page, country and device. Check new low-ranking queries, demand changes and the results layout before attributing the movement to AI answers.
Provide conditions, comparisons and source material that remain useful beyond a summary. Measure branded searches, on-site actions and enquiries separately. An impression or AI mention is not proof of increased trust or sales.