Installed850E130 reviewed outside battle: at649=4 initial dialogue sets5 then6 and requests Rayquaza, no immediate battle. At649>=6 with1871 true, choose Rayquaza then optional PC, then forced 6v12 UMBTITANIA1 + UMBAMARIA1. Anna route735 true only partial-heals surviving party before second double: UMBTITANIA2+GROUDON0 or UMBAMARIA2+KYOGRE0 depending1879. Immediate wild120 corresponding Primal capture follows, ending649=8. Do not begin without complete team/chain/capture prep and entry roster provenance. Source work/342-rayquaza-chain-source.json.