Right now the Timeline shows all edits by both users on pages where both users have made 1+ edit, regardless of the edit date. Given that Wikipedia is 17+ years old, there are a lot of "two ships passing in the night" edits that may take up space on the Timeline, especially on popular pages (e.g. Village Pump).
If two users edit the same page over a long period of time, they are not interacting. (Like these two users on the Iguana article.) I'm calling this the "interaction threshold"[1] — for now it is set to 'all time' but this is turning out to be too simplistic.
Acceptance criteria
- Whatever is set within the date range parameters should define the "pages where both users have edited"
[1] Shoot me if I ever suggest putting the words "interaction threshold" in the UI. ☠️
Future related task
- Because 'all time' already exists and hypothetically could serve a purpose we should keep it as a somewhat hidden option — for work in a later task: T190208: Timeline: Add UI element to allow users to set definition of "pages where both users have edited" to 'all time'
- T189850: Timeline: Allow users to hide edits on certain pages