Seperate Bookings Luggage Checkin

Hi everyone,

I booked an award flight from my home city to Seattle (SEA) and have a connecting Delta flight from SEA to Incheon (ICN) the next day. I'm wondering if Delta will check my luggage all the way through to ICN even though these two flights are on separate itineraries. Ideally, if Delta can combine the two flights, I would be able to check in one extra bag from my home city because of the international flight.

Thank you!