Train transfer issues

I can't get the site to work if I specify this itinerary, one leg via train and one via bus:
Input: five days a week, Circular Quay to Bondi Junction.
then Add transfer, choose any of the bus options
Get error, "Sorry, couldn't work out a sensible route between those two stations. Try a bus instead?"

I guess this is because the site needs to calculate a transfer at Town Hall or Central for this route? But this shouldn't matter for the fares really.