You are describing the behavior of a NACS vehicle. I'm wondering what happens if you connect a DC charger to the AC pins of a CCS1 vehicle, and then start the D

You are describing the behavior of a NACS vehicle. I'm wondering what happens if you connect a DC charger to the AC pins of a CCS1 vehicle, and then start the DC handshake. If the DC charger is required to passively sense the battery voltage before charging, then it's probably fine. Otherwise, magic smoke!