I used the SQ lounge at ICN several years ago and recall that it was fairly good, with decent food and beverage selections. Any updates about this lounge? I'll have a chance to try the OZ lounge at ICN soon. Are the two lounges near each other, in case I'll have enough time to try both?

A related question: I'll be flying NRT-ICN-SFO, both on OZ J, with *G status. How efficient is the transfer at ICN (1.5 hr layover)? I'd imagine there's no need for passport control, but will there be security check after landing from NRT and/or prior to boarding for SFO?