Regardless of "Star Alliance" contract or not, many airlines for years have had interline baggage agreements. As far as these 2 airlines I have no idea.

At SFO, with limited instance, there are no "transit passengers". I suppose that there is some INS secured transit lounge, but have never seen it. 1:20 is plenty of time at the existing terminal. This is one thing I will miss when the new terminal opens... just how close everything is. At the time I expect your UA flight to arrive (late AM), if you are a US Citizen, you should be done with immigration in 5 mins. Baggage is another story, but on an A320 (I would expect), it shouldn't take too long... good luck.

[This message has been edited by Eastbay1K (edited 06-08-2000).]