Electric Vehicle Charger (simple) power feed

Job ID: 37636093

Budget: $30 – $250 USD

We are in need of a solution or solutions to wire two EV chargers with a single (240v / 100a) feed. These must pass code in all 50 States. The chargers will be configured (within the chargers' firmware to share (split) the power output (40a each) when two vehicles are plugged in, and provide full power (80a) when one is plugged in.
The question is.... Can the power feed to the two chargers be daisy chained or will they require a junction box where the power feed is split into two feeds?
Attached is the manual and cut sheet for the charger.
Related categories: Electrical Engineering Circuit Design