Exactly. I had several hours to kill between domestic flights at ORD, so I took the tram to terminal 5, passed through TSA with a terminal 1 boarding pass and got in the SAS lounge using my *Gold status. Spent 90 minutes there and walked out of T5 and caught the tram back to T1. It takes some time to transfer terminals, but if you have lots of time to kill it's with it, IMO.