Howdy Joe,
Level I and II EVSE charging uses the SAE J1772 protocol which does NOT use the CAN Buss for communication and control--it uses discrete voltage levels and a 1kHz square wave for communication and control.
Level III DCQC is using the CHAdeMO proprietary protocol and connector for charging, which DOES use the CAN Buss for comm and control. The CAN Buss parameters are secret and only available by purcha$ing the expen$ive $pec from the Chademo organization.
Mitsubishi made their own little box that was sold in Japan, so i know the ChAdeMO port is Bi-directional, but i think in your case it is the CANT Buss that is preventing easy access from the Laef box--likely different parameters and codes are unique to each manufacturer.
Your box could likely be made to work, but it would take some CAN Buss reverse engineering and fake out.
i have looked on the Japanese version of ebay/yahoo and found the mitsubishi box for sale, e.g. 135,000 Yen,
but just never wanted to pull out the wallet for one.
https://aucview.com/yahoo/r472308262/
MITSUBISHI MiEV power BOX Part Number: MZ604775(ZHTP1566R)
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press release
https://www.mitsubishi-motors.com/publish/pressrelease_en/corporate/2012/news/detail0834.html?fbclid=IwAR0ZEZSl-EoBMPFm9VXJvgA9yTTfvTNeR0Tbs9B755HakskiUuUTLaJMF8o&mibextid=tejx2t
