Is my banana orchid supposed to do something?

[Rross]

In early winter, I was given a couple of double pseudobulbs of a banana orchid. I put them into pots of all-purpose orchid bark and kept them on my deck (sunny in winter, shaded in summer) with my cattleyas and cymbidiums. It’s now mid-summer and they’re still just sitting there - no leaves, no nothing - ever. They’re not mushy and actually feel quite hard when I pinch them so I don’t think they’re dead. Could someone please tell me what is supposed to happen with them? I’m in Sydney, a warm zone.