Hi Marcel,

the golden middle has been used ("3"). To be honest, at least according to the decsription and basic algorithm design principles it should not matter, as there is nothing moving in between subject & camera and actual subject detection has never been lost.

Quote from the manual:
Choose how quickly focus responds if something passes between the subject and the camera when AF‑C is selected for the focus mode.

Furthermore (I didn't mention this), I use Focus priority for single shots and Focus + Release for burst shots, as the "Focus" settings for burst can bring the cameras down to a crawl (at least the Z6/Z7, I have not enough experience with burst shots on the Zf yet).
I just checked the timestamps and all of my example are single shots and not bursts (typically something like 1-3fps was being used by manual activation of the shutter) (whereas my burst setting is 5fps). All of the samples shown should have used "Focus Priority" accordingly.