2 months back, when my fren went to nepal through delhi from jfk, he also had 15 -16 hrs of transit. he said flight from jfk to delhi was good but at delhi he was handed his luggages back, I mean luggages were not transfered from flight to flight so he had to roam around for all that long hrs with his luggages worrying abt it. then later same checkin process and luggage weight issues. if u have 2 big luggages with u, there's gonna be a problem about weight issues at delhi airport. don't forget to check weight n number limits for luggages from delhi to ktm.