My PV remains in production when there is an outage. Then after 5 minutes I see the three of my inverters (Delta Solivia) shut off solar production while the SolarEdge inverter stays online and producing. 5 minutes later, the Delta inverters come back online.
If you jump to about 3:14 in the above video, you can see that the solar is happily producing at 12.4 kW during an outage. Then the Powerwalls try the grid again. The Delta inverters stop producing while the SolarEdge continues to produce. Around 8:56, the Delta Solivia inverters start coming back online. Then at 9:25, there's another 'outage' and the cycle repeats.
It appears that the level of charge (loc) in your PowerWalls was below the level considered “high charge” (90%+) when you recorded this. I wonder what would have occurred if the PWs were at 91%+?