Jason, I see this is your first post on the forum so welcome.
I'm happy that you were able to do what you did. Many people spend a lot of time pointing out what you can't do with solar instead of exploring the possibilities.
I think I understand a little better what you did. You started the day with nearly full batteries, and charged them to full. You ended the day with 50% depleted batteries, taking about 1.9 kWh from the batteries. This left about 4.6 kwh to be produced by solar. This would require 8 to 9+ hours at full production of 34 amps to harvest. A very exceptional day indeed. Yet your video also shows a hazy day with a period of clouds and rain. The times you show the controller it is not showing max production. The batteries also showed 88% in the evening. So I'm a bit skeptical.
4.6 kWh proportional to my system of 370 watts would be 2.8 kWh. Running appliances all day in an attempt to keep production at maximum, the best I have seen is about 2.1 kWh.
On the other hand, 2kWh per day from a 600 watt system seems reasonable with generally good solar days.