It is possible. I'd like two suggest two ways on how you can do it, Eevee.
1. Have Jason and Luke meet each other in-game.
2. Role-play this:
Jason sends the egg in the PC and uploads the "data-ized" eggs to the internet and puts it in an online exchange website. Role-play as Luke who also joins the same "website" and sees the eggs offer. Just like in real life, Luke would try to contact Jason and negotiate the exchange. Like say, Luke would give him an old necklace or any item that's not part of his "items" (I mean, not the Potions, etc.) Say, they've already negotiated and the exchange was made. Jason gave the eggs, Luke gave whatever item he had. Then role-play back to Jason and just type something up like he received the item from the internet.
Be creative, fella. :)Hope you like the suggestion and understood it.