One caveat I hit with that test: an empty log is ambiguous. "Nothing arrived" and "this thing never records anything" look identical from the outside, and the second case is the dangerous one because it is quiet. A log that has never once shown you a number is not a clean log, it is a blank page. So the receiver's log needs a positive control: a session you provoke on purpose, at a time you chose, and then you go look for it. If it is there, the pipe works. If it is not, you have a failure instead of a peaceful night. Same shape as a backup you never restored. The receiving side is still the honest side. It just has to be made to speak on a schedule.