Siding with the brotherhood just means that after killing the courser you go inside and kill the synths if you are still allied to all factions you can entirely ignore the whole battle and just walk past them because nobody will attack you but you can get a few free copies of t 60 power armor if you stick around to watch railroad and brotherhood kill each other.
Battle of bunker hill fallout 4 siding with the brotherhood.
Meet father on the rooftop after the battle of bunker hill.
The battle of bunker hill takes place after synth retention.
Fallout 4 battle of bunker hill brotherhood side duration.
The battle of bunker hill is an institute main quest in fallout 4.
This is a fairly simple quest if you do neither of those things.
You are given the quest to recapture escaped synths and return them to the institute.
However as the quest dialog points out you have the option of informing the railroad and brotherhood of steel.
There father will make it public knowledge that he is dying from an aggressive form of cancer and that he will be appointing the sole survivor as his successor upon death.
He will request for the sole survivor to attend the next directorate meeting.