I got my 1st card through agent and my 2nd card online after 1 year. When I am trying to apply for my 3rd card it is not working. So if you want 2 cards it is the way to get it. Both are different limits.
Recently I got my 3rd card based on my existing credit card with a shared limit. In this way one can have 4 cards on BOB from the above 2 cards one can get other 2 cards but based on shared limit.