I am thinking of booking a special fare from ORD to Istanbul. I live in Phoenix and was going to book the phx-ord round trip segment separately as it is cheaper. Is there any way that I will be able to re-check my bags through to Phoenix after clearing customs in ORD without going out of security and going to the kiosk. essentially, can I check in to our flight from ORD to PHX after clearing customs and recheck bags immediately if it's not the same itinerary? Thanks