I was in the Melbourne airport a few days ago flying TG in biz class to Thailand. I tried to use UA's lounge explaining that I was flying TG in biz class, but was denied entry. Told to go to Air New Zealand's lounge upstairs. ANZ let me in immediately. I am not Star Gold yet on TG, but will be next month.

I thought that if you were flying biz class on any Star Alliance carrier, you were allowed access to ANY Star Alliance biz lounges. Am I wrong?