From what I've read so far that's not officially possibly. Might be doable with a hack, but I'm not sure I'd risk that ...
I've had a deeper look into this (but not read the standards): I think it has to do with the locking the cable during charge to avoid arcing when unmating under load to protect the contacts from wear.
Thus, the charging station without cable has a socket that expects to lock a cable, and the charging station with cable expects a socket that locks:

blue: cable connector with deeply recessed pins and notches for mechanical lock; black: socket with locking mechanism (hidden in housing) and pins closer to front
Now, when you attach the blue connector to a
cable coming from a charging station, one or more pins won't engage due to the recess, and nothing happens. That's where the hack starts:
Those cheap adapters come in long or short

The left one is shorter; allowing the contacts to engage - it emulates the socket on the top picture; at least an electrical connection is ensured (that's before having to use the aforementioned circuitry to convince the charging station to start giving energy). Apparently, few charging stations expect to engage the lock and have sensors when it doesn't, thus giving no energy when this hack is used.
There's a video sequence where this hack is applied; it uses the longer expensive adapter (shown in the Stark pics/videos) shortened with a saw
Hack application (starts at 7:30)
The comfort of carrying only one adapter for when you not know if you end up at a charging station with or without cable attached circumvents the locking feature, which is meant to be an additional protection against arcing (preventing vandalism or cable theft is just a side feature).
Understandably, the charging station owner wants to protect their contacts against wear which is not that much of an issue after two or three arcs, but certainly after dozens: the electrical connection gets a higher resistance and heats up. At some point, pulling 6.6Kw over the worn contact for longer will heat up the connector pretty badly causing possibly immense damage. Many charging station T&Cs include a ban on any sort of adapter or extension (mentioned in the vid above).
That said, using the Stark portable charger will always allow to unmate the connection under load since its mains plug does not have a locking provision - using an adapter or not.