F08-GN: Yes
Rationale
The documented CADET channel is independent of the underlying connections used by its destination tunnel. Replacing a failed intermediate path can retain the channel, provided endpoints and tunnel state survive. This is an architectural inference, not measured handover or unlimited outage tolerance.
Assessment method
Primary-document analysis and bounded architectural inference; no execution
Source context
GNUnet CADET handbook, v0.20.x documentary baseline
Outstanding qualification
Pin a runtime compatible with the v0.20.x documentary profile. Replace an intermediate connection while retaining the same channel handle and tunnel state; verify delivery, ordering and timeout behavior. The historical handbook is not an executable qualification.