1 more BaB implies when you get +1 from whichever class. For this next level, monk and druid would both up your BaB by 1, which would give you an other attack for the purpose of FoB.
His calculation seems correct :
Monk bab = 3 (monk level is applied as bab for the purpose of FoB)
Druid bab = 7
total = 10
So that's 2 attacks
Under level 8 monk, so only 1 bonus attack from Flurry
1 from haste and 1 from ki as he said.
