To be fairly honest I can't see them allowing back to back botting offences, just depends on their mood I guess, a lot comes into play when they deal out the two day bans, for eg. what you are botting, how many resources you have brought into the game over the amount of time you have botted, how length of time the account has been played for etc. They seem to be more lenient with giving out bans to players that have been around longer.