Some models had a squall line, but in reality it remained hit or miss with backbuilding clusters and slow moving supercells. The low and mid level wind fields were nothing special, but it seemed like there was strong shear up at the anvil level preventing cold pool formation. The tops of the storm were being blown way to the SE. It being too humid for much evaporation (not to mention late at night) could also be part of it.
I’m just happy I got lucky with a drought ending trainer locally when I wasn’t expecting much.