A tap is not yet an intention
During a grocery review last year, add_to_bag fired when a person opened a dietary preview. The weekly chart called that engagement. The person had not chosen an oil; they had asked a filter a question.
Engagement, in the narrow sense we use in the studio, is a person remaining with a task they can finish. A tap can be part of that. A tap can also be a mis-hit, a laggy retry, or a look through frosted glass. The inventory has to say which.
When we mark an event, we ask the owner to point at the exact control. If they point at three controls, we split the name or we refuse to call the number an intention. That argument is dull. It is also the argument that keeps a readout from celebrating curiosity as hunger.