I plan to fly from US to Incheon via. Delta Airline and connect my next leg to Shanghai via. Korean Airline on two separate tickets. I have 3 hours for my connection. Here are my questions:

1. Do you think Delta would interline my check-in baggage all the way to Shanghai?
2. If I have to reclaim my check-in baggage, do you think the 3-hour layover is enough time?
3. If I don't have a check-in baggage, can I just pick up my BP at the transfer desk without going through the immigration counter to recheck in at the landside?
4. After deplane, do I reach to the KE transfer desk before or after passing the security check line?
5. Does the international arrival terminal for DL at the same terminal as the one for KE?

Thanks in advance for your helps!