I don't believe this is correct:think:
from what I understand, bridging is running one steroid for a few weeks, then running a different steroid for another few weeks...usually with a week of overlap where the dosages of each are more conservative. this is usually done for the purpose of synergy!
typical bridge cycle begin with a more mild compound and then migrate to the more aggressive one.
IE:
4weeks of Phera and 3 weeks of SD...6 week cycle (4th week Phera and SD overlap)
phera:
10/20/30/10/0/0
SD:
0/0/0/10/20/20