What happens when you withdraw money from your Coinbase account to your bank and it gets "lost" in transit? Answer: Absolutely fuck all apparently.
My buddy Dave attempted to make a withdrawal of £5000 to his HSBC account on the 16th August. The money is shown as leaving his coinbase Wallet, but it's never been received by his bank. Coinbase, in regular fashion, despite having been contacted by email every day since have so far yet to respond.
So, it's taken over 8 days for the funds to not get there. Which is twice the amount of time it takes for a Cheque to clear.
If you're thinking about transferring some money out of coinbase, just be aware!
Will keep you updated as to what happens.