Do bonus attacks have to follow the descending-BAB order in a full-attack sequence? For example, would a character with a BAB of +6 and a Haste buff be able to take the bonus attack last (sequence of +6/+1/+6), or would they have to follow +6/+6/+1?
What about conditional bonus attacks, like those from the Medusa's Wrath feat, where the sequence could determine whether the attacks are granted at all? For example, a level 20 monk performs an unarmed Flurry of Blows using the Dazing Assault feat (+13/+13/+8/+8/+3/+3/-2), and hits and dazes the opponent with his 3rd unarmed strike. Would the monk be able to take the bonus attacks from Medusa's Wrath this round? Could he choose when to take them, or would they need to be taken immediately (being the highest-BAB attacks available at that moment)?
Thanks for any help.