[HeatguyAlvin]

Originally Posted by Black Page

I PMed you.
Thank you!! So informative. Really helpful for me and others.

I am carefully studying this option you suggest, but overall the only advantage I see seems that I could skip passing the immigration of Singapore, and thus save some space on my passport.
However, the total journey time seems even longer than taking Horizon Ferry from Harbour Bay to Harbour Front, then Aeroline Bus from Harbour Front to Corus Hotel in KL.
Via JB, I have to go to Batam Centre, then in JB after immigration find a taxi who is honest and does not overcharge too much (this is the difficult part), go to Larkin, take the bus which takes me not to KL centre but to the TBS terminal, far away from centre.

Seriously, I am considering to fly instead of bus.

one is faster, one is cheaper. If you are worried about the taxi to larkin, take a bus lor or use Grab. Cannot overcharge you.