Editor Interaction Analyzer
This tool shows the common pages that multiple editors have both edited, sorted by minimum time between edits by any of the users. In other words, if two editors made an edit to the same page within a short time, that page will show up towards the top of the table. In general, when two users edit a page within a short time, chances are high that they have interacted directly with one another on that page. Click on the "timeline" link to see the edits that all users have made to the page in chronological order.