No, I think scyrene's question was correct. The camera is capable of focus bracketing. the focus stacking/depth compositing part has to be done in software external to the camera. Some Panasonic cameras (like my little FZ300) do the whole bit in-camera and I think that was the point he was trying to make.
My R3 does the whole bit in-camera, initially it could only focus bracket but the ability to stack (Canon calls it 'depth compositing') was added with the v1.2.0 firmware update.
I was wondering if the person I replied to was conflating them, asking have they introduced the compositing with the firmware updates? My understanding was that the R6 could shoot automated focus stacks but not combine them in camera. It would be very helpful if they had added the latter.
Apologies, I assumed he meant that depth compositing was added to the R6 with the v1.6.0 update and that you were conflating the terms. After checking the R6 firmware update history, I think perhaps neither of you was conflating the terms, but
@BudgieB was conflating the R6 v1.6.0 update with the R3 v.1.2.0 update – updates to the R3, R5 and R6 were
announced at the same time, and while the R3 got a bunch of new features including depth compositing and flash shooting while focus bracketing, the R6 got only a couple of feature updates and focus stacking/depth compositing was not one of them.
The R6 had focus bracketing at launch, it was not added in a firmware update. It does not have depth compositing (yet, I suppose there's always hope).