I'm looking at some flight options for an upcoming trip. My favorite option (putting us on an A380) would give us a 3 hour layover in ICN (from PEK, to LAX). We would be flying in on Air China which looks like it lands in the other terminal, and have to transfer to the Main Terminal for our Asiana departure. I've read that ICN immigration/security etc is very quick.

But for anyone who's done it - will we have time in a 3 hour layover to transfer, take a shower in the Asiana Main Terminal Business Class Lounge (yes we're flying business class) and then grab some takeout food before boarding our plane? Does that sound like we'd be tight for time or not?