Hi - hoping for some expert advice.

My mom and I are planning on a few days in Seoul in March. She will be flying from TPE on Asiana and arriving a couple of hours earlier than I will be from SFO on United.

I was looking at the ICN website and it shows a few arrivals areas.

Does anyone have any advice on where it's likely that we will both arrive -

1. Is it possible it will be the same arrivals area?
2. If not, where is it best to meet my mom?
3. Where should she kill a few hours while waiting for me?

I usually travel with them or arrive before/leave after they do so I can be safely assured they are on their way. This 2-hour gap is stressing me out a bit.

Thanks for any advice!