I finally heard from BA and they claim they sent the funds to my account three days after notifying me of their decision, back in early February. They asked for, and I sent them, a letter from my bank stating the funds were never received. I also forward to them from my bank, the exact instructions for sending funds to my account. This last communication with them occurred last Thursday, 3/15/2018. We'll see what, if anything happens now. BA was not specific about what method they used to send the funds, even despite my specifically asking them about it.
I have since opened a TransferWise Borderless Banking account, which gives me an account number, routing number IBAN/SWIFT info for a bank in Munich that accepts euros, and so if this is not successful, I'll be able to provide them with an easier way to send the funds to me.