if im not wrong only AM/BR > BNDEP transfer buses among
themself and HG with SL BB/AR dat all i know
Yeaps. All along the case has been like that, within their own
districts. AM + BR + BN = East district, the others are West
district. Unless it's for some super major swaps or purposes - like
back then the DM3500s from BN/AM/BR went in bulk to BBDEP to
replace the JB Mk3s, or now when BBDEP needs the Batch 1 Euro IV
KUBs for the JB svcs.
There are a few exceptions over the past few years
though.