Whilst we're on the subject of boundary zone tickets, I occasionally
need to go to Chelmsford. At Liverpool Street I usually ask for a BZ2
to Chelmsford ticket but my request usually gets refused as I'm told
that there is no stop in Z2 from Liverpool Street towards Stratford. I
seem to recall reading that there's no requirement for there to be a
stop for a BZ tickets (unlike named stations), but have never felt
like arguing the toss for such a small amount. Who is right in this
case?

Thanks,

Luke