Originally Posted by Keyser

Actually, both your posts are not clear. Your original post said there were two separate reservations. If you booked the tickets separately & have two different PNRs then you will likely face a problem. The staff at DOH have the ability to deny you boarding since they will treat DEL to be your final destination & you won't have a visa.

Your second post seems to indicate that you have a single PNR & both segments were booked together. If this is the case then you don't need a visa. If you are on a single PNR for the entire journey (DOH-DEL-KTM) then you will have no problem since its a regular international to international transit.