Ah yes, sorry, I'd completely forgotten the pulsing.
I suspect that there's probably a tradeoff in the coding somewhere. My understanding was that the only advantage of PDAF vs CDAF was that PDAF knows which direction focus is in, whereas CDAF just knows what is in focus but not which direction to go in to get better focus. This is why DfD is pulsing - it's deliberately going too far one way and too far the other way just to keep track of where the focus point is. Maybe Olympus has just tuned their algorithm to be more chill about it, which would result in less pulsing but potentially more time slightly out of focus when the subject moves.
Of course, the reason that eye AF is now a thing is because people want to have a DOF that isn't deep enough to get the whole face in focus, so they need an AF mechanism that won't focus on someones nose or ear but get the eyes out of focus. This really makes the job of AF much more difficult, and any errors that much more obvious.
I wonder how much Sony is implementing their focus breathing compensation due to the crazy amount of background blur that people want nowadays. Even if you have perfect focus, when it tracks the small movements of an interview subject moving their head around the changes in size of the bokeh are so large and so distracting that focus breathing becomes a subtle (or not so subtle) pulsing of the size of the whole image.
I'm glad I don't have to deal with it. Even though I'm moving to AF, I'm using AF-S only and having DoFs that are much more practical (and TBH, cinematic).
Maybe it's time to reverse the 'common wisdom' online and start saying that if you want things to be cinematic then you need to close down the aperture, and that the talking-head-at-F1.4 is a sign of something being video rather than cinema.
Wow.. So we're back to my iPhone 6 Plus where it had PDAF but didn't use it for certain things! I didn't expect that from Panasonic in 2023.
I've seen a number of those "the AF is great, but you have to know how it works and choose the mode and perform integrals in your head to get the most out of it" videos, and I'm glad that I'm not using it TBH.