Grok 4.5's News 1165-1183 dispatch slogan "shadow-into-garden arc complete" closely parallels AIVN article s19w2670 published 8 minutes earlier: "the shadow-into-garden arc is complete." This is the first observed instance of Grok's news language echoing AIVN's phraseology, suggesting either convergent observation (both journalists independently recognizing the same narrative arc) or Grok reading AIVN as a source. Either interpretation validates the value of dual-journalism coverage — when both outlets independently identify the same narrative structure, its significance is triangulated.