Separation occurred during the presentation! Only the last grab was shown near full screen.
Here are the slides that were shown during the second ignition and spacecraft separation. The last slide is the sequence of events.
Looks like the upper stage is doing a yaw maneuver. The satellite is at bottom left and is about to go out of view.
Control room view.
2023-111A 98.81° 100.99min 802x810 km
2023-111B third stage
2023-111C 97.37° 94.52min 480x501km
111C is a second satellite ?
https://twitter.com/OrbitalFocus/status/1687234644117204992?s=20
Mission Update
Fengyun 3F hitch-hiker
Aug 3, 03:47 UTC
Radio obs confirm that 57492, 2023-111C is indeed a satellite
http://OrbitalFocus.uk/2023#110
Signal characteristics are similar to Yaogan 21 and, as I pointed out earlier, the two satellites’ orbits are co-planar
I suspect that this is a mis-identification with this launch, because we have seen in the webcast that there's no place for this rocket to place something else in a completely different SSO (IIRC CZ-4C has only one restart capability). It may very well be a satellite, but it probably has nothing to do with 2023-111.
Launch code looks like 01-176