[PrO.GameR]

I'm pretty sure there is no way to hook it, but technically you can chain it yourself, in the end of each enter command you call the next command by cmd_bankenter(playerid,params) or sth like that.

Now that I think about it you could give hooking method 7 a shot, but instead of forwarding and returning the CMD name directly, you should use cmd_ before calling it.
it might work.