The connectors are different so that is highly unlikely, that adapter would have to be huge or unwieldy. (Or maybe two adapters that you daisy chained, but that would probably cause too much insertion loss.)
I fully expect to see a CCS adapter appears once there are more CCS chargers around.
I've been expecting to see separate adapters too - but the daisy chain seems like an interesting idea.
With the right firmware in the CHAdeMO adapter, it could just take a simple dumb adapter to physically match the CCS plug (and having that attached would tell the smart adapter it needs to "speak CCS" instead of CHAdeMO - the firmware would have both options programmed in to it.)
What is this concern about insertion loss, though?