"You can also add up to three additional cards for others on your joint checking account and pay no additional annual fees. Plus each new cardholder will receive 2,500 bonus OnePass miles."

Anyone yet figure out how on earth they post miles to the "new cardholder"? Does the new cardholder need to have a Chase account? This is so confusing because if this were true, Chase would need the OnePass number of each cardholder for whom you are asking for additional cards and I don't know if anyone has been asked for this.