from my observation, the AI bands are in the parallax dimension of the BB world, which means they are like others AI units on the map who wont need to train new guys nor repair nor heal, their gears are randomly spawned in each different encounter, their number will increase once they sit their asses on a settlement, and they will always have some guys as strong as bandit leader, and if you are lucky, you will find one or two tier 1 bandit raider like.
i havent met this quest you mentioned, but when i was been chasing by a AI band, i lured them to a orc camp to get a little help.
