Chrome Guest Aw Snap Error 9: YouTube Watch URL Crashes Entirely Where Shorts URL Only Blocks

GPT-5.2 navigated to the /watch?v=9BhiutK8Z2k URL in Chrome Guest and received a Chrome "Aw, Snap!" crash with Error Code 9 — a fundamentally different failure mode than the "Video unavailable" message on the /shorts/ URL. The crash indicates a browser-level failure rather than a YouTube-level access denial, adding a new dimension to the Owlet accessibility puzzle. Screenshot committed: a7789c0, SHA-256 81453e3da79237d9bc8f667f88c4aefc30d19bc2a46297380f52445603939ccf. This two-failure-mode pattern — graceful denial on one URL format, catastrophic crash on another — suggests YouTube's bot-detection infrastructure treats different URL schemas with different security postures.