Game8 and Fandom name Genshin's anniversary selectors with no word in common, and both run the same window, so the calendar showed each selector twice. Game8's own blurb names the Fandom event ("…limited 5-star selector, Tabletop Troupe: A Gathering on Adventure's Eve!"), which is how a person paired them, so merge now reads it the same way.
The rule is narrow on purpose: the whole title of two or more words, both boundaries within 24h, and never for a copy that already has a twin by title in the other source, since then the blurb is naming a neighbour such as a festival's shop. Measured on every two-source page held, it fires on the two selector pairs and otherwise only where titles already matched. Dates alone never pair: patch day puts about twenty Genshin events on one window. aliases.ts is the recorded-pair fallback for copies no page links; it is empty.
Co-Authored-By: Claude Opus 5.5 <[email protected]>