Here is a 240V to ChaDeMo / CCS (Europe CCS it looks like) portable charger.
https://www.evseadapters.com/products/portable-chademo-ccs-combo-dc-quick-charger/
I can't vouch for if it actually works, but you can see it's over +$3,400 just to convert 240V AC to the 500V DC needed to QC. This one only does 20 amps max.
It would take basically another "black box" of electronics to take the CCS, do all the protocol / port locking / etc. and then feed that voltage safely into something like this to pipe it back out to a ChaDeMo connection. So, probably another $3,000 in electronics and hardware to safely bridge that power over, and even then, maybe get 20 amps of ChaDeMo charging at best. To make the wires thick enough, relays big enough, to handle some 120 amps of current, I would suspect that just to create one unit for "CCS to ChaDeMo" might be nearly +$10,000 just in hardware alone, plus whatever software and electronics needed to be setup to make it all work together.
Not saying that all of that could not be *shrunk* down to a more portable and reliable size, but that anyone or any company that wanted to create such adapters would either have to make them lower power to reduce size and cost, so instead of a full power quick charge, maybe a half or quarter power QC? We know Tesla has already done a nice ChaDeMo to Tesla converter, that while is a good weighted size of plugs, can work at 50 kW in a fairly portable size. They sold them at $400 a piece.
If someone was selling a CCS to ChaDeMo adapter for a similar price (that could run at the full 50 kW power like Tesla) all in a fairly portable form factor, I think they would sell very well, but only if the price was low enough. The most amazing CCS to ChaDeMo adapter in the world isn't going to move if they are selling for +$5,000, someone would have to find a way to get the cost, waaaaayyyy, down.