Charles. Your description eliminates L.Cattleya to be preceding Irene. There always will be differences. Like animals or humans offsprings from the same parents can be very different. And they also can be very similar. It is just random. A spin of the wheel. Buying an orchid in bloom can offer insight. The size and shape of the flowers may be a hint. Multiple spikes might be another tell. Divisions from awarded plants improve the odds. With all that a sibling from the same flask could be great or a dud. With good breeding the number of duds decline.

Why are you asking?

Jane