Reports RmYN02, a bat sarbecovirus from Yunnan (93.3% genome identity to SARS-CoV-2 overall, closest relative in the long ORF1ab region) that carries a multi-nucleotide insertion at its own S1/S2 junction. Cited by the zoonosis side as evidence that spike-junction insertions occur naturally in wild bat coronaviruses, though RmYN02’s RBD is divergent (61.3% identity) and likely does not bind ACE2. A later critique (S-55 - Deigin Segreto 2021 — SARS-CoV-2’s claimed natural origin is undermined by genome-sequence issues) disputes whether the “insertion” is real rather than a mis-assembled deletion. relevance_note: the main natural-precedent data cited against reading the furin cleavage site itself as an engineering signal.