There is a possibility that Service 198 had went partial SLBP
with the following spotting records:
15 April 2014: SBS7728P
20 April 2014: SBS7510A
21 April 2014: SBS3692J, SBS7593K
Today: SBS3757G, SBS7402D
Cameos from ARBP/BBDEP side on 198 includes SBS7388L (21/4) and
SBS3087G (SWT 198A), SBS9543S (22/4).
It is also rumoured that SBS7311H did 174 on 20 Apr.
This has been going on for quite awhile, spotted 3269 and a few
other buses before, normally in the afternoon, always wondered if
it was an e-pullover or lunch break crossover ...
like perviously there was the 243 to 198 crossover