In my early conversations with my bank, they stated that among other things, they would need to see proof of where the funds had come from (proof of original $ deposit into FTX, FTX trading history, etc.), and I just assumed that sending the crypto to a different exchange would add another layer of complexity that would make that process much harder.
But perhaps I took an overly conservative (and now catastrophic) stance when trying to do everything as cleanly as possible.
I have a sneaking feeling your approach might have worked (or at least it's hard to imagine it being a worse outcome than what actually happened). I'm feeling pretty stupid now for not exploring this further. I guess I never expected FTX would just disappear, and so I didn't explore every option as fully as I should have. I appreciate your suggestion in any case.
And the comment around Coinbase also makes sense, though I suppose my exposure to that risk could have been minimized assuming the money would ideally only have been sitting there for a few days. In retrospect, I should have obviously attempted the Coinbase route.
The part that should be no problem is the American bank itself, if you ask first for instructions. Coinbase is a legit American entity. Procedure should be same as making large transfers or consolidations of IRAs or liquidating brokerage holdings to buy a house.
The money did arrive successfully by the way, but I just took away from that exercise that banks are really, really strict about money transfers and the origin of monies. This all has me thinking that getting crypto back into the banking system -- to the extent it's easy today -- might only get harder in the future.
My concern in this specific situation was greater around moving money from crypto -> bank, vs. bank -> bank. My general sense is that once the money is inside of the traditional banking system, it's less likely to face issues.
But coming to the bank with a wad of cash (or crypto), in my view, could trigger all kinds of issues (in theory at least).