Not a new account, but tried to pull to a joint Ally account from an account in my wife's name (w her approval of course). It completely failed and customer service was unable to resolve. The rep I spoke to was great and helped me file a complaint.
Note that I'm not trying for a "double bonus", but we happen to have $11k left in the last account that isn't in both our names and it seemed an auspicious time to bring it over to our joint Ally account.
The initial issue was that I had enrolled in the bonus program on my login, but the account in question was added as an external account on my wife's login to our joint account.
Because it was added on her login, I could not add it on my side to set up the transfer. Customer service advised it would not be approved as an external account on my login anyway because my name was not on the account. Unfortunately, the issue was compounded by the fact that if my wife made the transfer, it would not be eligible for the bonus because my wife's login account had not enrolled in the bonus program before the deadline (my oversight, but annoying). I asked if they could enroll her manually or swap my enrollment to her email address, but no luck. The front line reps not only didn't have access to the enrollment database but couldn't find out who did to escalate to them.
If anyone finds a way past this logjam I hope they'll post here. Only a couple of days left to initiate a transfer.