How cool was it in your winter ? I've only been to Brisbane once, and that was from a cruise ship, spending a few hours, and I can't even remember what month it was anyway !
Soft cane - D. nobile and its hybrids and allies require to be kept cool and dry in their rest period and will then usually have flower buds showing at the end of that period.
However, the plant on the left above looks to me more like a Dendrobium in the phalaenopsis section ( no its not a phally ) which require but little rest, and perhaps need more light than you have given this one, judging by the colour of the leaves.
But if you got keikis you were doing most things right apart from giving too much water ( they need nil = zero = absolutely nothing ! ) in that rest period. They only need fertiliser when in active growth. So try repeating whatever it was you did before except stop the water. You don't need to start again until those buds are clearly visible as flower buds, and even then they don't need very much until the new growths start and a crown of new roots is seen.
It is difficult for a beginner to recognise just how much water many orchids will enjoy when growing fast - like an inch or two of rain a day every day , and just how little they need at other times, like three months between successive waterings !