Business class passengers also have access to priority check - in and business class lounges at most airports. (travelcodex.com)
This means that Star Alliance Gold fliers traveling on United (even domestically) can access the Star Alliance business class lounge in the Tom Bradley International terminal. (rewardexpert.com)
With Premier Gold or Premier Platinum elite status, you'll have access to Star Alliance business class lounges as a Star Alliance Gold member when you travel abroad, even when flying in economy class. (upgradedpoints.com)