Reported baseline distance vs. measured

Yep, that is a fact…
But as I read it, the difference is not there when doing PP, only RTK.
Hence when question on if the PP was using Fix-and-hold or Continuous.
As the Reach platform is based on RTKlib, I am guessing they should reach somewhat the same conclusions. The only exception I can think is if the rover was moved marginally, after Fix-and-hold had already locked on a point. That won’t be the same in PP, I would suspect.

However, haven read @TB_RTK ‘s report a few weeks ago, I never use Fix-and-Hold for static points. It is just too “sticky”.