Looks as if it might have been a three phase version of J1772 ... very odd!! Can't seem to find reference to it anywhere.
That is your takeaway from watching that segment, the type of connector?
What do you mean? There's a lot more in that video but the charging port is definitely unusual. I half expected an inductive charging port as seen on very early EVs like the GM EV1. I've never seen that port before.
The whole vehicle is odd. I didn't see any obvious way for the engine to generate power for the hybrid battery, no high voltage orange cabling in the engine compartment and only belt driven accessories.
So perhaps they draw power from the rear motor in this case - basically using the road and two tyres as a massive belt. But if that's the case it can't run electric accessories when stopped in traffic (if the battery is flat) and low speed driving is unlikely to be enough to charge the battery.
Or perhaps it can only run on the electric motor when the battery is charged from mains, and there is no way to top off the high voltage battery from the engine (so do you have a petrol-driven AC compressor and an electric driven one? What about heating? Charging the 12V battery?)
They clearly never got as far as making those things work but the lack of any high voltage generator in the engine compartment makes this less of a hybrid and more of a dual powertrain vehicle.
Very much looks like a "make sure it moves and that's all really" kind of prototype, which I guess is fine for what they were aiming at but I wonder what the plan for an actual vehicle would have looked like.