Join Date: May 2005
Location: Near Lichfield, UK
Programs: BMI DC Gold, BA Gold, LH SEN, Priority Club Platinum, Nectar purple
Posts: 949
If your incoming flight is running late, they will often have an Asiana rep waiting at the gate holding a sign for your flight. I've seen this several times when arriving ICN from China when the flight has been delayed due to ATC.
Otherwise as others say, 70 mins is a breeze to change at ICN.